As shown in table 1 the cost of counting the nation’s population has been escalating with each decade. The 2010 Census was the most expensive in U.S. history at about $12.3 billion, and was about 31 percent more costly than the $9.4 billion 2000 Census (in 2020 dollars). According to the Bureau, the total cost of the 2020 Census in October 2015 was estimated at $12.3 billion and in October 2017 that cost estimate grew to approximately $15.6 billion, approximately a $3 billion increase. Additionally, Bureau officials told us that while the estimated cost of the census had increased to $15.6 billion, it was nevertheless managing the 2020 Census to a lower cost of $14.1 billion. Bureau officials explained that the $14.1 billion includes all program costs and contingency funds to cover risks and general estimating uncertainty. The remaining $1.5 billion estimated cost is additional contingency for “unknown unknowns”—that is, low probability events that could cause massive disruptions—and several what-if scenarios such as an increase in the wage rate or additional supervisors needed to manage field operations. Moreover, as shown in figure 1, the average cost for counting a housing unit increased from about $16 in 1970 to around $92 in 2010 (in 2020 constant dollars). At the same time, the return of census questionnaires by mail (the primary mode of data collection) declined over this period from 78 percent in 1970 to 63 percent in 2010. Declining mail response rates has led to higher costs because the Bureau sends temporary workers to each non-responding household to obtain census data. Achieving a complete and accurate census has become an increasingly daunting task, in part, because the population is growing larger, more diverse, and more reluctant to participate in the enumeration. In many ways, the Bureau has had to invest substantially more resources each decade to conduct the enumeration. In addition to these external societal challenges that make achieving a complete count a daunting task, the Bureau also faces a number of internal management challenges that affect its capacity and readiness to conduct a cost-effective enumeration. Some of these issues—such as acquiring and developing IT systems and preparing reliable cost estimates—are long-standing in nature. At the same time, as the Bureau looks toward 2020, it also faces newly emerging and evolving uncertainties. For example, on March 26, 2018, the Secretary of Commerce announced his decision to add a question to the decennial census on citizenship status. On January 15, 2019, the U.S. District Court for the Southern District of New York ruled on one of a number of legal challenges to the Secretary’s decision. That ruling is being appealed, thus, leaving the use of the question uncertain. The U.S. Supreme Court is scheduled to begin hearing arguments in April 2019 regarding the addition of the citizenship question to the census form. In our prior work we have noted the risks associated with late changes of any nature to the design of the census if the Bureau is unable to fully test those changes under operational conditions. The Bureau also faced budgetary uncertainties that, according to the Bureau, led to the curtailment of testing in 2017 and 2018. However, the Consolidated Appropriations Act, 2018 appropriated for the Periodic Censuses and Programs account $2.544 billion, which more than doubles the Bureau’s request in the President’s Fiscal Year 2018 Budget of $1.251 billion. According to the explanatory statement accompanying the act, the appropriation, which is available through fiscal year 2020, is provided to ensure the Bureau has the necessary resources to immediately address any issues discovered during operational testing, and to provide a smoother transition between fiscal year 2018 and fiscal year 2019. The availability of those resources enabled the Bureau to continue preparations for the 2020 Census during the 35 days when appropriations lapsed for the Bureau. Moreover, the Consolidated Appropriations Act, 2019 appropriated for the Periodic Censuses and Programs account $3.551 billion. According to Bureau officials, this level of funding for fiscal year 2019 is sufficient to carry out 2020 Census activities as planned. Importantly, the census is conducted against a backdrop of immutable deadlines. In order to meet legally mandated reporting requirements, census activities need to take place at specific times and in the proper sequence. Thus, it is absolutely critical for the Bureau to stay on schedule. Figure 2 shows some dates for selected decennial events. The Bureau has begun to open its area census offices (ACO) for the 2020 Census. It has signed leases for all 248 ACOs, of which 39 of the offices will be open for the address canvassing operation set to begin in August 2019 where staff verifies the location of selected housing units. The remaining 209 offices will begin opening this fall. In 2010 the Bureau opened 494 census offices. The Bureau has been able to reduce its infrastructure because it is relying on automation to assign work and to record payroll. Therefore there is less paper—field assignments, maps, and daily payroll forms—to manually process. For the 2020 Census, the Bureau is refining its recruiting and hiring goals, but tentatively plans to recruit approximately 2.24 million applicants and hire nearly 500,000 temporary field staff from that applicant pool for two key operations: address canvassing, and nonresponse follow-up, where they visit households that do not return census forms to collect data in person. In 2010 the Bureau recruited 3.8 million applicants and hired 628,000 temporary workers to conduct the address canvassing and nonresponse follow-up field operations. According to Bureau officials, it has reduced the number of temporary staff it needs to hire because automation has made field operations more efficient and there is less paper. As of April 15, 2019, for its early operations efforts which includes hiring listers for address canvassing, the Bureau has processed approximately 264,000 applicants which represent 128.4 percent of its 205,000 recruiting goal. The Bureau is also in the process of hiring approximately 1,500 partnership specialists needed by June 2019 to help increase awareness and participation in the 2020 Census in minority communities and hard-to-reach populations. As of April 17, 2019, the Bureau has hired 467 partnership specialists, and another 329 applicants are waiting to have their background checks completed. Moreover, Bureau officials also stated that the current economic environment (i.e., the low unemployment rate compared to the economic environment of the 2010 Census) has not yet impacted their ability to recruit staff. The Bureau will continue to monitor the impact of low unemployment on its ability to recruit and hire at the local and regional levels. For the 2020 Census, the Bureau is significantly changing how it intends to conduct the census, in part by re-engineering key census-taking methods and infrastructure, and making use of new IT applications and systems. For example, the Bureau plans to offer an option for households to respond to the survey via the internet and enable field-based enumerators to use applications on mobile devices to collect survey data from households. To do this, the Bureau plans to utilize 52 new and legacy IT systems, and the infrastructure supporting them, to conduct the 2020 Census. A majority of these 52 systems have been tested during operational tests in 2017 and 2018. For example, the Bureau conducted its 2018 End-to- End test, which included 44 of the 52 systems and was intended to test all key systems and operations in a census-like environment to ensure readiness for the 2020 Census. Nevertheless, additional IT development and testing work needs to take place before the 2020 Census. Specifically, officials from the Bureau’s Decennial Directorate said they expect that the systems will need to undergo further development and testing due to, among other things, the need to add functionality that was not part of the End-to-End test, scale system performance to support the number of respondents expected during the 2020 Census, and address system defects identified during the 2018 End-to-End test. To prepare the systems and technology for the 2020 Census, the Bureau is also relying on significant contractor support. For example, it is relying on contractors to develop a number of systems and components of the IT infrastructure, including the IT platform that is intended to be used to collect data from households responding via the internet and telephone, and for non-response follow-up activities. Contractors are also deploying the IT and telecommunications hardware in the field offices and providing device-as-a-service capabilities by procuring the mobile devices and cellular service to be used for non-response follow-up. In addition to the development of technology, the Bureau is relying on a technical integration contractor to integrate all of the key systems and infrastructure. The contractor’s work is expected to include, among other things, evaluating the systems and infrastructure and acquiring the infrastructure (e.g., cloud or data center) to meet the Bureau’s scalability and performance needs; integrating all of the systems; and assisting with technical, performance and scalability, and operational testing activities. In February 2017, we added the 2020 Decennial Census as a high-risk area needing attention from Congress and the executive branch. This was due to significant risks related to, among other things, innovations never before used in prior enumerations, the acquisition and development of IT systems, and expected escalating costs. Among other things, we reported that the commitment of top leadership was needed to ensure the Bureau’s management, culture, and business practices align with a cost-effective enumeration. We also stressed that the Bureau needed to rigorously test census-taking activities; ensure that scheduling adheres to best practices; improve its ability to manage, develop, and secure its IT systems; and have better oversight and control over its cost estimation process. Our experience has shown that the key elements needed to make progress toward being removed from the High-Risk List are top-level attention by the administration and agency leaders grounded in the five criteria for removal, as well as any needed congressional action. The five criteria for removal that we identified in November 2000 are as follows: Leadership Commitment. The agency has demonstrated strong commitment and top leadership support. Capacity. The agency has the capacity (i.e., people and resources) to resolve the risk(s). Action Plan. A corrective action plan exists that defines the root causes and solutions, and that provides for substantially completing corrective measures, including steps necessary to implement solutions we recommended. Monitoring. A program has been instituted to monitor and independently validate the effectiveness and sustainability of corrective measures. Demonstrated Progress. The agency has demonstrated progress in implementing corrective measures and in resolving the high-risk area. These five criteria form a road map for efforts to improve, and ultimately address, high-risk issues. Addressing some of the criteria leads to progress, while satisfying all of the criteria is central to removal from the list. As we reported in the March 2019 high-risk report, the Bureau’s efforts to address the risks and challenges for the 2020 Census had fully met one of the five criteria for removal from the High-Risk List—leadership commitment—and partially met the other four, as shown in figure 3. Additional details about the status of the Bureau’s efforts to address this high-risk area are discussed later in this statement. The 2020 Census is on our list of high-risk programs because, among other things, (1) innovations never before used in prior enumerations are not expected to be fully tested, (2) the Bureau continues to face challenges in implementing IT systems, (3) the Bureau faces significant cybersecurity risks to its systems and data, and (4) the Bureau’s cost estimate for the 2020 Census was unreliable. If not sufficiently addressed, these risks could adversely impact the cost and quality of the enumeration. Moreover, the risks are compounded by other factors that contribute to the challenge of conducting a successful census, such as the nation’s increasingly diverse population and concerns over personal privacy. The basic design of the enumeration—mail out and mail back of the census questionnaire with in-person follow-up for non-respondents—has been in use since 1970. However, a lesson learned from the 2010 Census and earlier enumerations is that this traditional design is no longer capable of cost-effectively counting the population. In response to its own assessments, our recommendations, and studies by other organizations, the Bureau has fundamentally re-examined its approach for conducting the 2020 Census. Specifically, its plan for 2020 includes four broad innovation areas: re-engineering field operations, using administrative records, verifying addresses in-office, and developing an internet self-response option (see table 2). If they function as planned, the Bureau initially estimated that these innovations could result in savings of over $5 billion (in 2020 constant dollars) when compared to its estimates of the cost for conducting the census with traditional methods. However, in June 2016, we reported that the Bureau’s initial life-cycle cost estimate developed in October 2015 was not reliable and did not adequately account for risk. As discussed earlier in this statement, the Bureau has updated its estimate from $12.3 billion and now estimates a life-cycle cost of $15.6 billion, which would result in a smaller potential savings from the innovative design than the Bureau originally estimated. According to the Bureau, the goal of the cost estimate increase was to ensure quality was fully addressed. While the planned innovations could help control costs, they also introduce new risks, in part, because they include new procedures and technology that have not been used extensively in earlier decennials, if at all. Our prior work has shown the importance of the Bureau conducting a robust testing program, including the 2018 End-to-End test. Rigorous testing is a critical risk mitigation strategy because it provides information on the feasibility and performance of individual census-taking activities, their potential for achieving desired results, and the extent to which they are able to function together under full operational conditions. To address some of these challenges we have made numerous recommendations aimed at improving reengineered field operations, using administrative records, verifying the accuracy of the address list, and securing census responses via the internet. The Bureau has held a series of operational tests since 2012, but according to the Bureau, it scaled back its most recent field tests because of funding uncertainties. For example, the Bureau canceled the field components of the 2017 Census Test including non-response follow-up, a key census operation. In November 2016, we reported that the cancelation of the 2017 Census Test was a lost opportunity to test, refine, and integrate operations and systems, and that it put more pressure on the 2018 End-to-End test to demonstrate that enumeration activities will function under census-like conditions as needed for 2020. However, in May 2017, the Bureau scaled back the operational scope of the 2018 End-to-End test and, of the three planned test sites, only the Rhode Island site would fully implement the 2018 End-to-End test. The Washington and West Virginia sites would test just one field operation. In addition, due to budgetary concerns, the Bureau decided to remove three coverage measurement operations (and the technology that supports them) from the scope of the test. However, removal of the coverage measurement operations did not affect testing of the delivery of apportionment or redistricting data. Without sufficient testing, operational problems can go undiscovered and the opportunity to improve operations will be lost, in part because the 2018 End-to-End test was the last opportunity to demonstrate census technology and procedures across a range of geographic locations, housing types, and demographic groups under decennial-like conditions prior to the 2020 Census. To manage risk to the census, the Bureau has developed hundreds of mitigation and contingency plans. To maximize readiness for the 2020 Census, it will also be important for the Bureau to prioritize among its mitigation and contingency strategies those that will deliver the most cost-effective outcomes for the census. We reported on the 2018 End-to-End test in December 2018 and noted that the Bureau had made progress addressing prior test implementation issues but still faced challenges. As the Bureau studies the results of its testing to inform the 2020 Census, it will be important that it addresses key program management issues that arose during implementation of the test. Namely, by not aligning the skills, responsibilities, and information flows for the first-line supervisors during field data collection, the Bureau limited its role in support of enumerators within the re-engineered field operation. The Bureau also lacked mid-operation training or guidance, which, if implemented in a targeted, localized manner, could have further helped enumerators navigate procedural modifications and any commonly encountered problems when enumerating. It will be important for the Bureau to prioritize its mitigation strategies for these implementation issues so that it can maximize readiness for the 2020 Census. We have previously reported that the Bureau faces challenges in managing and overseeing IT programs, systems, and contractors supporting the 2020 Census. Specifically, we have noted challenges in the Bureau’s efforts to manage, among other things, the schedules and contracts for its systems. As a result of these challenges, the Bureau is at risk of being unable to fully implement the systems necessary to support the 2020 Census and conduct a cost-effective enumeration. To help improve its implementation of IT for the 2020 Census, the Bureau recently revised its systems development and testing schedule. Specifically, in October 2018, the Bureau organized the development and testing schedule for its 52 systems into 16 operational deliveries. Each of the 16 operational deliveries has milestone dates for, among other things, development, performance and scalability testing, and system deployment. According to Bureau officials in the Decennial Directorate, the schedule was revised, in part, due to schedule management challenges experienced, and lessons learned, while completing development and testing during the 2018 End-to-End test. The Bureau has made initial progress in executing work against its revised schedule. For example, the Bureau completed development for the systems in the first operational delivery—for 2020 Census early operations preparations—in July 2018, and deployed these systems into production in October 2018. However, our current work has determined that the Bureau is at risk of not meeting several near-term systems testing milestones. As of April 2019, six systems that are expected to be used in a total of two operational deliveries are at risk of not meeting milestone dates which would signal that the systems have completed development and are ready for testing. These six systems are needed for, among other things, field assignment management and worker performance tracking during address canvassing, data collection for operations, business and support automation, and customer support during self-response. According to Bureau documentation, these systems were at risk due, in part, to the lack of finalized system requirements and specifications. Figure 4 presents an overview of the status for all 16 operational deliveries, as of April 2019. The at-risk systems previously discussed add uncertainty to a highly compressed time frame over the next 4 months. Importantly, between April and August 2019, the Bureau is expected to begin integration testing for the systems in seven operational deliveries, including internet self- response and non-response follow-up. Officials from the Bureau’s integration contractor noted concern that the current schedule leaves little room for any delays in completing the remaining development and testing activities. In addition to managing the compressed testing time frames, the Bureau also has to quickly finalize plans related to its IT infrastructure. For example, in March 2019, the Bureau’s technical integration contractor stated that it needed the Bureau to obtain approval from federal partners for its Trusted Internet Connection or finalize alternative plans in order to complete performance and scalability testing in a timely manner. As of mid-April 2019, the Bureau stated that it was still awaiting final approval. Given that these plans may impact systems being tested this summer or deployed into production for the address canvassing operation in August 2019, it is important that the Bureau quickly addresses this matter. Our past reporting noted that the Bureau faced significant challenges in managing its schedule for system development and testing that occurred in 2017 and 2018. We reported that while the Bureau had continued to make progress in developing and testing IT systems for the 2020 Census, it had experienced delays in developing systems to support the 2018 End-to-End test. These delays compressed the time available for system and integration testing and for security assessments. In addition, several systems experienced problems during the test. We noted then, and reaffirm now, that continued schedule management challenges may compress the time available for the remaining system and integration testing and increase the risk that systems may not function or be as secure as intended. The Bureau has acknowledged that it faces risks to the implementation of its systems and technology. As of March 2019, the Bureau had identified about 330 active risks for the 2020 Census program, through its risk management process, including 20 high risks that may have substantial technical and schedule impacts if realized. Taken together, these risks represent a cross-section of issues, such as the effects of late changes to technical requirements, the need to ensure adequate time for system development and performance and scalability testing, contracting issues, privacy risks, and skilled staffing shortages. Going forward, it will be important that the Bureau effectively manages these risks to better ensure that it meets near-term milestones for system development and testing, and is ready for the major operations of the 2020 Census. The risks to IT systems supporting the federal government and its functions, including conducting the 2020 Census, are increasing as security threats continue to evolve and become more sophisticated. These risks include insider threats from witting or unwitting employees, escalating and emerging threats from around the globe, and the emergence of new and more destructive attacks. Underscoring the importance of this issue, we have designated information security as a government-wide high-risk area since 1997 and, in our most recent biennial report to Congress, ensuring the cybersecurity of the nation was one of nine high-risk areas that we reported needing especially focused executive and congressional attention. Our prior and ongoing work has identified significant challenges that the Bureau faces in securing systems and data for the 2020 Census. Specifically, the Bureau has faced challenges related to completing security assessments, addressing security weaknesses, resolving cybersecurity recommendations from DHS, and addressing numerous other cybersecurity concerns (such as phishing). Federal law specifies requirements for protecting federal information and information systems, such as those systems to be used in the 2020 Census. Specifically, the Federal Information Security Management Act of 2002 and the Federal Information Security Modernization Act of 2014 (FISMA) require executive branch agencies to develop, document, and implement an agency-wide program to provide security for the information and information systems that support operations and assets of the agency. In accordance with FISMA, National Institute of Standards and Technology (NIST) guidance, and Office of Management and Budget (OMB) guidance, the Bureau’s Office of the Chief Information Officer (CIO) established a risk management framework. This framework requires system developers to ensure that each of the Bureau’s systems undergoes a full security assessment, and that system developers remediate critical deficiencies. According to the Bureau’s risk management framework, the systems expected to be used to conduct the 2020 Census will need to have complete security documentation (such as system security plans) and an approved authorization to operate prior to their use. Currently, according to the Bureau’s Office of the CIO: Fourteen of the 52 systems have authorization to operate, and will not need to be reauthorized before they are used in the 2020 Census Thirty-two of the 52 systems have authorization to operate, and may need to be reauthorized before they are used in the 2020 Census Six of the 52 systems do not have authorization to operate, and will need to be authorized before they are used in the 2020 Census. Figure 5 summarizes the authorization to operate status for the systems being used in the 2020 Census, as reported by the Bureau in April 2019. As we have previously reported, while large-scale technological changes (such as internet self-response) increase the likelihood of efficiency and effectiveness gains, they also introduce many cybersecurity challenges. The 2020 Census also involves collecting personally identifiable information (PII) on over a hundred million households across the country, which further increases the need to properly secure these systems. Thus, it will be important that the Bureau provides adequate time to perform these security assessments, completes them in a timely manner, and ensures that risks are at an acceptable level before the systems are deployed. We have ongoing work examining how the Bureau plans to address both internal and external cyber threats, including its efforts to complete system security assessments and resolve identified weaknesses. FISMA requires that agency-wide information security programs include a process for planning, implementing, evaluating, and documenting remedial actions (i.e., corrective actions) to address any deficiencies in the information security policies, procedures, and practices of the agency. Agencies must establish procedures to reasonably ensure that all information security control weaknesses, regardless of how or by whom they are identified, are addressed through the agency’s remediation processes. For each identified control weakness, the agency is required to develop and implement a plan of actions and milestones (POA&M) based on findings from security control assessments, security impact analyses, continuous monitoring of activities, audit reports, and other sources. Additionally, the Bureau’s framework requires that security assessment findings that need to be remediated are to be tracked as POA&Ms. These POA&Ms are expected to provide a description of the vulnerabilities identified during the security assessment that resulted from a control weakness. As of March 2019, the Bureau had over 500 open POA&Ms to remediate for issues identified during security assessment activities, including ongoing continuous monitoring. Of these open POA&Ms, 247 (or about 48 percent) were considered “high-risk” or “very high-risk.” While the Bureau established POA&Ms for addressing these identified security control weaknesses, it did not always complete remedial actions in accordance with its established deadlines. For example, of the 247 open “high-risk” or “very high-risk” POA&Ms we reviewed through March 2019, the Bureau identified 115 as being delayed. Further, 70 of the 115 had missed their scheduled completion dates by 60 or more days. In addition, the number of open “high-risk” or “very high-risk” POA&Ms that the Bureau identified as delayed has substantially increased since June 2018, as shown in figure 6. According to the Bureau, these POA&Ms were identified as delayed due to technical challenges or resource constraints to remediate and close them. However, without resolving identified vulnerabilities in a timely manner, the Bureau faces an increased risk, as continuing opportunities exist for unauthorized individuals to exploit these weaknesses and gain access to sensitive information and systems. The Bureau is working with federal and industry partners, including the Department of Homeland Security, to support the 2020 Census cybersecurity efforts. Specifically, the Bureau is working with DHS to ensure a scalable and secure network connection for the 2020 Census respondents (e.g., virtual Trusted Internet Connection with the cloud), improve its cybersecurity posture (e.g., improve risk management processes and procedures), and to strengthen its response to potential cyber threats (e.g., federal cyber incident coordination). Federal law describes practices for strengthening cybersecurity by documenting or tracking corrective actions. As previously mentioned, FISMA requires executive branch agencies to establish a process for planning, implementing, evaluating, and documenting remedial actions to address any deficiencies in their information security policies, procedures, and practices. GAO’s internal control standards also state that agencies should establish effective internal control monitoring that includes a process to promptly resolve the findings of audits and other reviews. Specifically, agencies should document and complete corrective actions to remediate identified deficiencies on a timely basis. This would include correcting identified deficiencies or demonstrating that the findings and recommendations do not warrant agency action. Since January 2017, DHS has been providing cybersecurity assistance (including issuing recommendations) to the Bureau in preparation for the 2020 Census, and the Bureau has reported making progress in addressing those recommendations. Specifically, DHS has been providing cybersecurity assistance to the Bureau in five areas: management coordination and executive support, including a cybersecurity threat intelligence and information sharing enhancement through, among other things, a DHS cyber threat briefing to the Bureau’s leadership; network and infrastructure security and resilience, including National Cybersecurity Protection System (also called EINSTEIN) support; incident response and management readiness through a Federal Incident Response Evaluation assessment; and risk management and vulnerability assessments on specific targets provided by the Bureau. In the last 2 years, as a result of these activities, DHS has provided 17 recommendations for the Bureau to strengthen its cybersecurity efforts. Among other things, the recommendations pertained to strengthening incident management capabilities, penetration testing and web application assessments of select systems, and phishing assessments to gain access to sensitive PII. Due to the sensitive nature of the recommendations, we are not identifying the specific recommendations or specific findings associated with them in this statement. As of February 2019, the Bureau had fully completed actions to address three recommendations, needed to further improve on actions taken for one recommendation it indicated had been completed, and needed to complete actions in progress for the remaining 13 recommendations (as summarized in table 3). However, the Bureau had not established a formal process for documenting, tracking, and completing corrective actions for all the recommendations provided by DHS. To the Bureau’s credit, it had incorporated the corrective actions associated with the three completed recommendations into its formal process used for tracking POA&Ms, which includes identifying remediation activities, resources required, milestones, and completion dates. The Bureau did not incorporate the remaining 14 recommendations into the POA&M process. Instead, in November 2018, the Bureau created an informal document to track the 17 DHS recommendations, but this document does not consistently include details such as the resources required, expected completion date, or whether the recommendations do not warrant agency action. Until the Bureau implements a formal process for tracking and implementing appropriate corrective actions to remediate identified cybersecurity weaknesses from DHS, and addresses the identified deficiencies, it faces an increased likelihood that these weaknesses will go uncorrected and may be exploited to cause harm to agency’s 2020 Census IT systems and gain access to sensitive respondent data. Implementing a formal process would also help to ensure that DHS’s efforts result in improvements to the Bureau’s cybersecurity posture. The Bureau faces other significant cybersecurity challenges in addition to those previously discussed. More specifically, we previously reported that the extensive use of IT systems to support the 2020 Census redesign may help increase efficiency, but that this redesign introduces critical cybersecurity challenges. These challenges include those related to the following: Phishing. We have previously reported that advanced persistent threats may be targeted against social media web sites used by the federal government. In addition, attackers may use social media to collect information and launch attacks against federal information systems through social engineering, such as phishing. Phishing is a digital form of social engineering that uses authentic-looking, but fake, emails, websites, or instant messages to get users to download malware, open malicious attachments, or open links that direct them to a website that requests information or executes malicious code. Phishing attacks could target respondents, as well as Bureau employees and contractors. The 2020 Census will be the first one in which respondents will be heavily encouraged to respond via the internet. This will likely increase the risk that cyber criminals will use phishing in an attempt to steal personal information. Disinformation from social media. We previously reported that one of the Bureau’s key innovations for the 2020 Census is the large-scale implementation of an internet self-response option. The Bureau is encouraging the public to use the internet self-response option through expanded use of social media. However, the public perception of the Bureau’s ability to adequately safeguard the privacy and confidentiality of the 2020 Census internet self-responses could be influenced by disinformation spread through social media. According to the Bureau, if a substantial segment of the public is not convinced that the Bureau can safeguard public response data against data breaches and unauthorized use, then response rates may be lower than projected, leading to an increase in cases for follow-up and subsequent cost increases. Ensuring that individuals gain only limited and appropriate access to 2020 Census data. The Bureau plans to enable a public- facing website and Bureau-issued mobile devices to collect PII (e.g., name, address, and date of birth) from the nation’s entire population— estimated to be over 300 million. In addition, the Bureau is planning to obtain and store administrative records containing PII from other government agencies to help augment information that enumerators did not collect. The number of reported security incidents involving PII at federal agencies has increased dramatically in recent years. Because of these challenges, we have recommended, among other things, that federal agencies improve their response to information security incidents and data breaches involving PII, and consistently develop and implement privacy policies and procedures. Accordingly, it will be important for the Bureau to ensure that only respondents and Bureau officials are able to gain access to this information, and enumerators and other employees only have access to the information needed to perform their jobs. Ensuring adequate control in a cloud environment. The Bureau has decided to use cloud solutions as a key component of the 2020 Census IT infrastructure. We have previously reported that cloud computing has both positive and negative information security implications and, thus, federal agencies should develop service-level agreements with cloud providers. These agreements should specify, among other things, the security performance requirements— including data reliability, preservation, privacy, and access rights— that the service provider is to meet. Without these safeguards, computer systems and networks, as well as the critical operations and key infrastructures they support, may be lost; information—including sensitive personal information—may be compromised; and the agency’s operations could be disrupted. Ensuring contingency and incident response plans are in place to encompass all of the IT systems to be used to support the 2020 Census. Because of the brief time frame for collecting data during the 2020 Census, it is especially important that systems are available for respondents to ensure a high response rate. Contingency planning and incident response help ensure that, if normal operations are interrupted, network managers will be able to detect, mitigate, and recover from a service disruption while preserving access to vital information. Implementing important security controls, including policies, procedures, and techniques for contingency planning and incident response, helps to ensure the confidentiality, integrity, and availability of information and systems, even during disruptions of service. Without contingency and incident response plans, system availability might be impacted and result in a lower response rate. The Bureau’s CIO has acknowledged these cybersecurity challenges and is working to address them, according to Bureau documentation. In addition, we have ongoing work looking at many of these challenges, including the Bureau’s plans to protect PII, use a cloud-based infrastructure, and recover from security incidents and other disasters. Since 2015, the Bureau has made progress in improving its ability to develop a reliable cost estimate. We have reported on the reliability of the $12.3 billion life-cycle cost estimate released in October 2015 and the $15.6 billion revised cost estimate released in October 2017. In 2016 we reported that the October 2015 version of the Bureau’s life-cycle cost estimate for the 2020 Census was not reliable. Specifically, we found that the 2020 Census life-cycle cost estimate partially met two of the characteristics of a reliable cost estimate (comprehensive and accurate) and minimally met the other two (well-documented and credible). We recommended that the Bureau take specific steps to ensure its cost estimate meets the characteristics of a high-quality estimate. The Bureau agreed and has taken action to improve the reliability of the cost estimate. In August 2018 we reported that while improvements had been made, the Bureau’s October 2017 cost estimate for the 2020 Census did not fully reflect all the characteristics of a reliable estimate. (See figure 7.) In order for a cost estimate to be deemed reliable as described in GAO’s Cost Estimating and Assessment Guide and thus, to effectively inform 2020 Census annual budgetary figures, the cost estimate must meet or substantially meet the following four characteristics: Well-Documented. Cost estimates are considered valid if they are well-documented to the point they can be easily repeated or updated and can be traced to original sources through auditing, according to best practices. Accurate. Accurate estimates are unbiased and contain few mathematical mistakes. Credible. Credible cost estimates must clearly identify limitations due to uncertainty or bias surrounding the data or assumptions, according to best practices. Comprehensive. To be comprehensive an estimate should have enough detail to ensure that cost elements are neither omitted nor double-counted, and all cost-influencing assumptions are detailed in the estimate’s documentation, among other things, according to best practices. The 2017 cost estimate only partially met the characteristic of being well- documented. In general, some documentation was missing, inconsistent, or difficult to understand. Specifically, we found that source data did not always support the information described in the basis of estimate document or could not be found in the files provided for two of the Bureau’s largest field operations: Address Canvassing and Non- Response Follow-Up. We also found that some of the cost elements did not trace clearly to supporting spreadsheets and assumption documents. Failure to document an estimate in enough detail makes it more difficult to replicate calculations, or to detect possible errors in the estimate; reduces transparency of the estimation process; and can undermine the ability to use the information to improve future cost estimates or even to reconcile the estimate with another independent cost estimate. The Bureau told us it would continue to make improvements to ensure the estimate is well- documented. The 2017 life-cycle cost estimate includes significantly higher costs than those included in the 2015 estimate. The largest increases occurred in the Response, Managerial Contingency, and Census/Survey Engineering categories. For example, increased costs of $1.3 billion in the response category (costs related to collecting, maintaining, and processing survey response data) were in part due to reduced assumptions for self- response rates, leading to increases in the amount of data collected in the field, which is more costly to the Bureau. Contingency allocations increased overall from $1.35 billion in 2015 to $2.6 billion in 2017, as the Bureau gained a greater understanding of risks facing the 2020 Census. Increases of $838 million in the Census/Survey Engineering category were due mainly to the cost of an IT contract for integrating decennial survey systems that was not included in the 2015 cost estimate. Bureau officials attribute a decrease of $551 million in estimated costs for Program Management to changes in the categorization of costs associated with risks. Specifically, in the 2017 version of the estimate, estimated costs related to program risks were allocated to their corresponding work breakdown structure (WBS) element. Figure 8 shows the change in cost by WBS category for 2015 and 2017. More generally, factors that contributed to cost fluctuations between the 2015 and 2017 cost estimates include: Changes in assumptions. Among other changes, a decrease in the assumed rate for self-response from 63.5 percent in 2015 to 60.5 percent in 2017 increased the cost of collecting responses from nonresponding housing units. Improved ability to anticipate and quantify risk. In general, contingency allocations designed to address the effects of potential risks increased overall from $1.3 billion in 2015 to $2.6 billion in 2017. An overall increase in IT costs. IT cost increases, totaling $1.59 billion, represented almost 50 percent of the total cost increase from 2015 to 2017. More defined contract requirements. Bureau documents described an overall improvement in the Bureau’s ability to define and specify contract requirements. This resulted in updated estimates for several contracts, including for the Census Questionnaire Assistance contract. However, while the Bureau has been able to better quantify risk; in August 2018 we also reported that the Secretary of Commerce included a contingency amount of about $1.2 billion in the 2017 cost estimate to account for what the Bureau refers to as “unknown unknowns.” According to Bureau documentation these include such risks as natural disasters or cyber attacks. The Bureau provides a description of how the risk contingency for “unknown unknowns” is calculated; however, this description does not clearly link calculated amounts to the risks themselves. Thus, only $14.4 billion of the Bureau’s $15.6 billion cost estimate has justification. According to Bureau officials, the cost estimate remains at $15.6 billion, but they are managing the 2020 Census at a lower level of funding—$14.1 billion and, at this time, do not plan to request funding for the $1.2 billion contingency fund for unknown unknowns or $369 million in funding for selected discrete program risks for what-if scenarios such as an increase in the wage rate or additional supervisors needed to manage field operations. Instead of requesting funding for these contingencies upfront the Bureau plans to work with OMB and Commerce to request additional funds, if the need arises. According to Bureau officials they anticipate that the remaining $1.1 billion in contingency funding included in the $14.1 billion will be sufficient to carry out the 2020 Census. In June 2016 we recommended the Bureau improve control over how risk and uncertainty are accounted for. This prior recommendation remains valid given the life-cycle cost estimate still includes the $1.2 billion unjustified contingency fund for “unknown unknowns”. Moreover, given the cost growth between 2015 and 2017 it will be important for the Bureau to monitor cost in real-time, as well as, document, explain and review variances between planned and actual cost. In August 2018 we reported that the Bureau had not been tracking variances between estimated life-cycle costs and actual expenses. Tools to track variance enable management to measure progress against planned outcomes and will help inform the 2030 Census cost estimate. Bureau officials stated that they already have systems in place that can be adapted for tracking estimated and actual costs. We will continue to monitor the status of the tracking system. According to Bureau officials it plans to release an updated version of the 2020 Census life-cycle estimate in the spring of 2019. To ensure that future updates to the life-cycle cost estimate reflect best practices, it will be important for the Bureau to implement our recommendation related to the cost estimate. The difficulties facing the Bureau’s preparation for the decennial census in such areas as planning and testing; managing and overseeing IT programs, systems, and contractors supporting the enumeration; developing reliable cost estimates; prioritizing decisions; managing schedules; and other challenges, are symptomatic of deeper organizational issues. Following the 2010 Census, a key lesson learned for 2020 that we identified was ensuring that the Bureau’s organizational culture and structure, as well as its approach to strategic planning, human capital management, internal collaboration, knowledge sharing, capital decision- making, risk and change management, and other internal functions are aligned toward delivering more cost-effective outcomes. The Bureau has made improvements over the last decade, and continued progress will depend in part on sustaining efforts to strengthen risk management activities, enhancing systems testing, bringing in experienced personnel to key positions, implementing our recommendations, and meeting regularly with officials from its parent agency, Commerce. Going forward, we have reported that the key elements needed to make progress in high-risk areas are top-level attention by the administration and agency officials to (1) leadership commitment, (2) ensuring capacity, (3) developing a corrective action plan, (4) regular monitoring, and (5) demonstrated progress. Although important steps have been taken in at least some of these areas, overall, far more work is needed. We discuss three of five areas below. The Secretary of Commerce has successfully demonstrated leadership commitment. For example, the Bureau and Commerce have strengthened this area with executive-level oversight of the 2020 Census by holding regular meetings on the status of IT systems and other risk areas. In addition, in 2017 Commerce designated a team to assist senior Bureau management with cost estimation challenges. Moreover, on January 2, 2019, a new Director of the Census Bureau took office, a position that had been vacant since June 2017. With regard to capacity, the Bureau has improved the cost estimation process of the decennial when it established guidance including: roles and responsibilities for oversight and approval of cost estimation processes, procedures requiring a detailed description of the steps taken to produce a high-quality cost estimate, and a process for updating the cost estimate and associated documents over the life of a project. However, the Bureau continues to experience skills gaps in the government program management office overseeing the $886 million contract for integrating the IT systems needed to conduct the 2020 Census. Specifically, as of February 2019, 15 of 44 positions in this office were vacant. For the monitoring element, we found to track performance of decennial census operations, the Bureau relied on reports to track progress against pre-set goals for a test conducted in 2018. According to the Bureau, these same reports will be used in 2020 to track progress. However, the Bureau’s schedule for developing IT systems during the 2018 End-to-End test experienced delays that compressed the time available for system testing, integration testing, and security assessments. These schedule delays contributed to systems experiencing problems after deployment, as well as cybersecurity challenges. In the months ahead, we will continue to monitor the Bureau’s progress in addressing each of the five elements essential for reducing the risk to a cost-effective enumeration. Over the past several years we have issued numerous reports that underscored the fact that, if the Bureau was to successfully meet its cost savings goal for the 2020 Census, the agency needed to take significant actions to improve its research, testing, planning, scheduling, cost estimation, system development, and IT security practices. As of April 2019, we have made 97 recommendations related to the 2020 Census. The Bureau has implemented 72 of these recommendations, 24 remain open, and one recommendation was closed as not implemented. Of the 24 open recommendations, 11 were directed at improving the implementation of the innovations for the 2020 Census. Commerce generally agreed with our recommendations and is taking steps to implement them. Moreover, in April 2018 we designated 15 recommendations as “priority.” Priority recommendations are those recommendations that we believe warrant priority attention from heads of key departments and agencies. Eight of these 15 priority recommendations have been closed as implemented over the past year. On July 19, 2018, in response to our April 2018 letter calling his attention to our priority recommendations, the Commerce Secretary concurred that there was still much work to be done, and that the number of our priority recommendations concerning the 2020 Census was reflective of Commerce’s focus on ensuring a successful census in 2020. On April 23, 2019, we sent an updated priority recommendation letter to the Commerce Secretary that included five new recommendations from our recent work and also reflected the department’s progress on implementing past recommendations. We believe that attention to these recommendations is essential for a cost-effective enumeration. The recommendations included implementing reliable cost estimation and scheduling practices in order to establish better control over program costs, as well as taking steps to better position the Bureau to develop an internet response option for the 2020 Census. In addition to our recommendations, to better position the Bureau for a more cost-effective enumeration, on March 18, 2019, we met with OMB, Commerce, and Bureau officials to discuss the Bureau’s progress in reducing the risks facing the census. We also meet regularly with Bureau officials and managers to discuss the progress and status of open recommendations related to the 2020 Census, which has resulted in Bureau actions in recent months leading to closure of some recommendations. We are encouraged by this commitment by Commerce and the Bureau in addressing our recommendations. Implementing our recommendations in a complete and timely manner is important because it could improve the management of the 2020 Census and help to mitigate continued risks. In conclusion, while the Bureau has made progress in revamping its approach to the census, it faces considerable challenges and uncertainties in implementing key cost-saving innovations and ensuring they function under operational conditions; managing the development and testing of its IT systems; ensuring the cybersecurity of its systems and data; and developing a quality cost estimate for the 2020 Census and preventing further cost increases. For these reasons, the 2020 Census is a GAO high-risk area. Regarding cybersecurity, the Bureau’s involvement of DHS to improve its cybersecurity posture, including cyber threat briefings and vulnerability assessments, is a positive step forward. However, the Bureau’s corrective actions to address its high-risk and very high-risk security weaknesses are frequently delayed—often for months—which increases the risk that these weaknesses could be exploited to cause harm to the agency’s systems. In addition, the Bureau’s process for addressing DHS’s cybersecurity recommendations has shortcomings, which increases the risk that the underlying deficiencies identified by DHS may be exploited to gain access to the Bureau’s systems and sensitive data. Going forward, continued management attention and oversight will be vital for ensuring that risks are managed, preparations stay on track, and the Bureau is held accountable for implementing the enumeration, as planned. Without timely and appropriate actions, the challenges previously discussed could adversely affect the cost, accuracy, schedule, and security of the enumeration. We will continue to assess the Bureau’s efforts and look forward to keeping Congress informed of the Bureau’s progress. We are making the following two recommendations to Commerce: The Secretary of Commerce should direct the Director of the Census Bureau to direct the Census Bureau’s CIO to take steps to ensure that identified corrective actions for cybersecurity weaknesses are implemented within prescribed time frames. (Recommendation 1) The Secretary of Commerce should direct the Director of the Census Bureau to direct the Bureau’s CIO to implement a formal process for tracking and executing appropriate corrective actions to remediate cybersecurity weaknesses identified by DHS, and expeditiously address the identified deficiencies. (Recommendation 2) Chairman Serrano, Ranking Member Aderholt, and Members of the Subcommittee, this completes our prepared statement. We would be pleased to respond to any questions that you may have. If you have any questions about this statement, please contact Robert Goldenkoff at (202) 512-2757 or by email at goldenkoffr@gao.gov or Nick Marinos at (202) 512-9342 or by email at marinosn@gao.gov. Contact points for our Offices of Congressional Relations and Public Affairs may be found on the last page of this statement. Other key contributors to this testimony include Jon Ticehurst (Assistant Director); Ty Mitchell (Assistant Director); Lisa Pearson (Assistant Director); Andrea Starosciak (Analyst in Charge); Christopher Businsky, Rebecca Eyler, Scott Pettis, Lindsey Pilver; Kate Sharkey; Kevin R. Smith; Umesh Thakkar; and Tim Wexler. This is a work of the U.S. government and is not subject to copyright protection in the United States. 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Summary: The Bureau, a component of the Department of Commerce (Commerce), is responsible for conducting a complete and accurate decennial census of the U.S. population. The decennial census is mandated by the Constitution and provides vital data for the nation. A complete count of the nation's population is an enormous undertaking as the Bureau seeks to control the cost of the census, implement operational innovations, and use new and modified IT systems. In recent years, GAO has identified challenges that raise serious concerns about the Bureau's ability to conduct a cost-effective count. For these reasons, GAO added the 2020 Census to its High-Risk list in February 2017. GAO was asked to testify about the reasons the 2020 Census remains on the High-Risk List and the steps the Bureau needs to take to mitigate risks to a successful census. To do so, GAO summarized its prior work regarding the Bureau's planning efforts for the 2020 Census. GAO also included preliminary observations from its ongoing work examining the IT systems readiness and cybersecurity for the 2020 Census. This information is related to, among other things, the Bureau's progress in developing and testing key systems and the status of cybersecurity risks. The 2020 Decennial Census is on GAO's list of high-risk programs primarily because the Census Bureau (Bureau) (1) is using innovations that are not expected to be fully tested, (2) continues to face challenges in implementing information technology (IT) systems, and (3) faces significant cybersecurity risks to its systems and data. Although the Bureau has taken initial steps to address risk, additional actions are needed as these risks could adversely impact the cost, quality, schedule, and security of the enumeration. Innovations : The Bureau is planning several innovations for the 2020 Census, including allowing the public to respond using the internet. These innovations show promise for controlling costs, but they also introduce new risks, in part, because they have not been used extensively, if at all, in earlier enumerations. As a result, testing is essential to ensure that key IT systems and operations will function as planned. However, citing budgetary uncertainties, the Bureau scaled back operational tests in 2017 and 2018, missing an opportunity to fully demonstrate that the innovations and IT systems will function as intended during the 2020 Census. To manage risk to the census, the Bureau has developed hundreds of mitigation and contingency plans. To maximize readiness for the 2020 Census, it will also be important for the Bureau to prioritize among its mitigation and contingency strategies those that will deliver the most cost-effective outcomes for the census. Implementing IT systems : The Bureau plans to rely heavily on IT for the 2020 Census, including a total of 52 new and legacy IT systems and the infrastructure supporting them. To help improve its implementation of IT, in October 2018, the Bureau revised its systems development and testing schedule to reflect, among other things, lessons learned during its 2018 operational test. However, GAO's ongoing work has determined that the Bureau is at risk of not meeting near-term IT system development and testing schedule milestones for two upcoming 2020 Census operational deliveries, including address canvassing (i.e., verification of the location of selected housing units). These schedule management challenges may compress the time available for the remaining system development and testing, and increase the risk that systems will not function as intended. It will be important that the Bureau effectively manages IT implementation risk to ensure that it meets near-term milestones for system development and testing, and that it is ready for the major operations of the 2020 Census. Cybersecurity : The Bureau has established a risk management framework that requires it to conduct a full security assessment for each system expected to be used for the 2020 Census and, if deficiencies are identified, to determine the corrective actions needed to remediate those deficiencies. As of March 2019, the Bureau had over 500 corrective actions from its security assessments that needed to be addressed, including nearly 250 that were considered “high-risk” or “very high-risk.” However, of these 250 corrective actions, the Bureau identified 115 as being delayed. Further, 70 of the 115 were delayed by 60 or more days. According to the Bureau, these corrective actions were delayed due to technical challenges or resource constraints. Resolving identified vulnerabilities within the Bureau's established time frames can help reduce the risk that unauthorized individuals may exploit weaknesses to gain access to sensitive information and systems. To its credit, the Bureau is also working with the Department of Homeland Security (DHS) to support its 2020 Census cybersecurity efforts. For example, DHS is helping the Bureau ensure a scalable and secure network connection for the 2020 Census respondents and to strengthen its response to potential cyber threats. During the last 2 years, as a result of these activities, the Bureau has received 17 recommendations from DHS to improve its cybersecurity posture. However, the Bureau lacks a formal process for tracking and completing corrective actions for these recommendations which would help to ensure that DHS's efforts result in improvements to the Bureau's cybersecurity posture. In addition to addressing risks which could affect innovations and the security of the enumeration, the Bureau has the opportunity to improve its cost estimating process for the 2020 Census, and ultimately the reliability of the estimate itself, by reflecting best practices. In October 2017, the 2020 Census life-cycle cost estimate was updated and is now projected to be $15.6 billion, a more than $3 billion (27 percent) increase over its earlier estimate. GAO reported in August 2018 that although the Bureau had taken steps to improve its cost estimation process for 2020, it needed to implement a system to track and report variances between actual and estimated cost elements. According to Bureau officials, they plan to release an updated version of the 2020 Census life-cycle estimate in the spring of 2019. To ensure that future updates to the life-cycle cost estimate reflect best practices, it will be important for the Bureau to implement GAO's recommendation related to the cost estimate. Over the past decade, GAO has made 97 recommendations specific to the 2020 Census to help address these risks and other concerns. Commerce has generally agreed with these recommendations and has taken action to address many of them. However, as of April 2019, 24 of the recommendations had not been fully implemented. Of the 24 open recommendations, 11 were directed at improving the implementation of the innovations for the 2020 Census. To ensure a cost-effective enumeration, it will be important for the Bureau to address these recommendations. GAO is making two recommendations to the Bureau to (1) better ensure that cybersecurity weaknesses are addressed within prescribed time frames, and (2) improve its process for addressing cybersecurity weaknesses identified by DHS.