The FSM, the Marshall Islands, and Palau are among the smallest countries in the world. In 2008, the three FAS had a combined resident population of approximately 179,000—104,000 in the FSM, 54,000 in the Marshall Islands, and 21,000 in Palau. Under the compacts of free association, citizens of the FAS are exempt from meeting the visa and labor certification requirements of the Immigration and Nationality Act as amended. The migration provisions of the compacts allow compact migrants to enter the United States (including all U.S. states, territories, and possessions) and to lawfully In the 1986 compacts’ enabling work and establish residence indefinitely.legislation, Congress stated that it was not its intent to cause any adverse consequences for U.S. territories and commonwealths and the state of Hawaii. Congress further declared that it would act sympathetically and expeditiously to redress any adverse consequences and authorized compensation for these areas that might experience increased demands on their educational and social services by compact migrants from the Marshall Islands and the FSM. The December 2003 amended compacts’ enabling legislation restated Congress’s intent not to cause any adverse consequences for the areas defined as affected jurisdictions—Guam, Hawaii, the CNMI, and American Samoa. The act also authorized and appropriated $30 million for each fiscal year from 2004 to 2023 for grants to the affected jurisdictions, to aid in defraying costs incurred by these jurisdictions as a result of increased demand for health, educational, social, or public safety services, or for infrastructure related to such services specifically affected by compact migrants resident in the affected jurisdictions. Figure 1 shows the locations of the FAS and the affected jurisdictions. The amended compacts’ enabling legislation provides for Interior to allocate the $30 million in grants to affected jurisdictions on the basis of their compact migrant population. Each affected jurisdiction is to receive its portion of the $30 million per year in proportion to the number of compact migrants living there, as determined by an enumeration to be undertaken by Interior and supervised by the U.S. Census Bureau (Census) or another organization at least every 5 years.the population to be enumerated as persons, or those persons’ children under the age of 18, who pursuant to the compacts are admitted to, or resident in, an affected jurisdiction. The amended compacts’ enabling legislation permits, but does not require, affected jurisdictions to report on compact migrant impact. If Interior receives such reports from the affected jurisdictions, it must submit reports to Congress that include, among other things, the governor’s comments and administration’s analysis of any such impacts. The combined data from Census’s 2005-2009 American Community Survey and the 2008 required enumerations in Guam and the CNMI estimated that approximately 56,000 compact migrants quarter of all FAS citizens—lived in U.S. areas, with the largest populations in Guam and Hawaii. An estimated 57.6 percent of all compact migrants lived in affected jurisdictions: 32.5 percent in Guam, 21.4 percent in Hawaii, and 3.7 percent in the CNMI, while nine mainland states each had an estimated compact migrant population of more than 1,000. (See fig. 2.) Census’s 2005-2009 American Community Survey and 2008 enumerations estimated the total number of compact migrants in U.S. states and territories as ranging from 49,642 to 63,048, with a 90 percent confidence interval; that is, Census is 90 percent confident that the true number of compact migrants falls within that range. For additional detail on these Census estimates, see pages 12 through 18 of GAO-12-64. Census suppressed the estimated values of remaining states to protect the confidentiality of individual respondents; we do not know how many of the remaining states contain migrants. On the basis of these combined data, we estimate that approximately 68 percent of compact migrants were from the FSM, 23 percent were from the Marshall Islands, and 9 percent were from Palau. Surveys conducted in affected jurisdictions from 1993 through 2008 show growth in the compact migrant populations in Guam and Hawaii. In the CNMI, from 2003 to 2008, the compact migrant population declined. Over the same period, the total compact migrant population in Guam and Hawaii grew as a percentage of their total populations. The estimated number of compact migrants in Guam increased from 9,831 in 2003 to 18,305 in 2008. In 2003, compact migrants represented approximately 6 percent of Guam’s total population, but by 2008 they had increased to approximately 12 percent. Compact migrants in Hawaii increased during the same period from an estimated 7,297 to 12,215 and represented approximately 1 percent of Hawaii’s total population in 2008. An analysis of 2010 decennial census race data also shows growth in the population of FAS-related persons throughout the United States, with the U.S. population of FAS-related persons more than tripling from 17,380 in 2000 to 55,286 in 2010. For 2004 through 2010, the affected jurisdictions’ reports to Interior show more than $1 billion in costs for services related to compact migrants. During this period, Guam’s annual reported costs increased by nearly 111 percent, and Hawaii’s by approximately 108 percent. The CNMI’s reported annual costs decreased by approximately 53 percent, reflecting the decline in the CNMI compact migrant population. During the same period, the amended compacts’ enabling legislation provided $210 million in impact grants—approximately $102 million to Guam, $75 million to Hawaii, and $33 million to the CNMI. Figure 3 shows compact impact costs reported by the affected jurisdictions for 1996 through 2010. The affected jurisdictions reported impact costs for education, health, public safety, and social services. Education accounted for the largest share of reported expenses in all three jurisdictions, and health care costs accounted for the second-largest share overall (see table 1). Several officials in Guam and Hawaii cited compact migrants’ limited eligibility for a number of federal programs, particularly Medicaid, as a key contributor to the cost of compact migration borne by the affected jurisdictions. While their parents may not be eligible for some programs, U.S.-born children of compact migrants are eligible as citizens for the benefits available to them as U.S. citizens. We identified a number of weaknesses related to accuracy, adequacy of documentation, and comprehensiveness in affected jurisdictions’ reporting of compact impacts to Interior from 2004 through 2010. Examples of such weaknesses include the following. Definition of compact migrants. For several impact reports that we examined, the reporting local government agencies, when calculating service costs, did not define compact migrants according to the criteria in the amended compacts enabling legislation. For instance, some agencies defined and counted compact migrants using the proxy measures of ethnicity, language, or citizenship rather than the definition in the amended compacts’ enabling legislation. Using ethnicity or language as a proxy measure could lead to overstating costs, since neither measure would exclude individuals who came to the jurisdiction prior to the compact, while using citizenship as a proxy measure could lead to understating costs, since it would exclude U.S.- born children of compact migrants. Federal funding. Guam, Hawaii, and the CNMI, among other U.S. states and territories, receive federal funding for programs that compact migrants use; however, not all compact impact reports accounted for this stream of funding and included costs in compact impact estimates for programs that federal funding had partially addressed. To the extent that federal revenue for programs in affected jurisdictions is based on population counts or data on usage, the presence of, and use of services by, compact migrants lead to federal offsets. For example, from 2004 to 2008, Hawaii developed its education impact costs by calculating a per-pupil expenditure multiplied by the number of compact migrant students enrolled each school year. However, federal funds received through several programs are included in these annual expenditures. If the federal funds component of per-pupil expenditures were subtracted from Hawaii’s education impact reporting, as well as a correction made to eliminate a data error that double-counted Marshallese students, it would reduce the total cost of services to compact migrants by approximately $61 million for 2004 through 2008 from $229 to $168 million. Revenue. Multiple local government agencies that receive fees as a result of providing services to compact migrants did not consider fees in their compact impact reports. Any exclusion of revenue may cause an overstatement of the total impact reported. Compact migrants also participate in local economies through their participation in the labor force, payment of taxes, consumption of local goods and services, and receipt of remittances. Previous compact migrant surveys estimated compact migrants’ participation in the labor force, but existing data on other compact migrant contributions such as tax revenues, local consumption, or remittances are not available or sufficiently reliable to quantify their effects. Capital costs. Many local government agencies did not include capital costs in their impact reporting. Capital costs entail, for example, providing additional classrooms to accommodate an increase in students or constructing additional health care facilities. In cases where compact migration has resulted in the expansion of facilities, agencies understated compact migrant impact by omitting these costs. Per person costs. A number of local government agencies used an average per-person service cost for the jurisdiction rather than specific costs associated with providing services to compact migrants. For example, one jurisdiction based the cost of providing health care services to compact migrants on the number of migrants served out of the total patient load instead of totaling each patient’s specific costs. Using the average cost may either overstate or understate the true cost of service provision. A number of local government agencies did not disclose their methodology for developing impact costs, including any assumptions, definitions, and other key elements, which makes it difficult to evaluate reported costs. Furthermore, some agency methodologies vary among affected jurisdictions. For those years when the affected jurisdictions submitted impact reports to Interior, not all local government agencies in the affected jurisdictions included compact impact costs for those years.