This report provides policy and historical background about Puerto Rico's political status —referring to the relationship between the federal government and a territorial one. Congress has not altered the island's status since 1952, when it approved a territorial constitution. Status is the lifeblood of Puerto Rican politics, spanning policy and partisan lines in ways that are unfamiliar on the mainland. Puerto Rico has been in political flux in recent years, culminating most recently in the 2017 plebiscite. Momentum toward that outcome began in the 2016 elections, when Puerto Ricans selected a prostatehood New Progressive Party (NPP/PNP) Governor, Resident Commissioner, and majorities in the Legislative Assembly. Shortly after assuming office, the Governor and legislature enacted a territorial law authorizing a plebiscite containing two ballot choices: statehood or free association/independence. (Free association is a form of independence entailing negotiated close ties between two countries.) After the U.S. Department of Justice declined to certify the release of federal funds to support the plebiscite, Puerto Rico amended its plebiscite law to add a status-quo option on the ballot. Some political parties and other groups on the island encouraged their supporters to boycott the plebiscite. On June 11, 23.0% of voters turned out for the plebiscite, where 97.2% selected statehood; 1.5% selected free association/independence; and 1.3% chose the "current territorial status." In anticipation of a statehood victory in the plebiscite, the territorial legislature enacted, and the Governor signed, legislation in June 2017 to pursue a "Tennessee Plan" path to statehood. That method traditionally involves sending an appointed or elected "delegation" to Washington to lobby Congress to grant statehood. Because the U.S. Constitution grants Congress broad discretion over territories, the House and Senate may choose to reexamine Puerto Rico's political status, or to decline to do so. If Congress chose to alter Puerto Rico's political status, it could do so through statute regardless of whether a plebiscite were held or what sentiment such a vote revealed. As with all CRS reports, this product provides background information and analysis for Congress. It emphasizes those facets of the status policy debate that historically have been most relevant for House and Senate consideration, and that appear to remain most relevant for Members and staff who are considering those issues. It emphasizes the current status debate in Puerto Rico specifically rather than examining status in all U.S. territories. This report is not intended to substitute for a comprehensive analysis of the complex and culturally sensitive issues surrounding Puerto Rico's more than 100-year affiliation with the United States. The report also is not intended to be an analysis of the various legal, economic, or social issues that might arise in considering Puerto Rico's political status or a change in its relationship with the United States. Parts of this report are adapted from another CRS product, which provides additional discussion of the 2012 plebiscite. Puerto Rico has been the subject of strategic and political attention for more than 500 years. Spain was the first colonial power to claim the island. Christopher Columbus landed on the west coast of the main island of present-day Puerto Rico on November 19, 1493. There, he encountered native Taíno Indians, who called the island "Borinquén" (or, in some spellings, "Borinkén"). As one scholar has noted, "[a] permanent foothold was finally established in 1508, when Juan Ponce León led a group of settlers from Hispaniola." Spanish colonizers forced the Taíno into servitude, and "[b]y 1521, the Indian Borinquén had become another Spanish settlement in an expanding empire." For the next 400 years, Puerto Rico served as a Spanish agricultural and mining outpost in the Caribbean. When the United States defeated Spain in the Spanish-American War (1898), the United States acquired Puerto Rico, Guam, and the Philippines from Spain via the Treaty of Paris. Puerto Rico provided the United States with a central location from which to exercise military and strategic power in the Caribbean, particularly before World War II. The U.S. military briefly administered the island until Congress established a civilian government in 1900. Today, Puerto Rico is both deeply integrated into American society and insulated from it. On one hand, the American flag has flown over San Juan, the capital, for more than 100 years. In addition, those born in Puerto Rico are U.S. citizens. Many live and work on the mainland and serve in the military. On the other hand, as shown in Figure 1 , the island is geographically isolated from the mainland United States; it lies approximately 1,500 miles from Washington and 1,000 miles from Miami. Residents of Puerto Rico lack full voting representation in Congress, typically do not pay federal income taxes on income earned on the island, do not have the same eligibility for some federal programs as those in the states, do not vote in presidential elections (although they may do so in party primaries), and enjoy a culture and predominant Spanish language that some argue more closely resembles Latin America than most of the 50 states. Some regard status as the fundamental political question that drives everything else about the Puerto Rico-U.S. relationship. Others see status as a distraction from more compelling everyday policy and economic challenges. Perhaps because that debate remains unsettled, status is an undercurrent in virtually every policy matter on the island. Federal policy debates generally are less affected by status, but here, too, status often arises at least tangentially. As such, even a basic knowledge of the topic may be helpful in multiple policy areas. In the foreseeable future, oversight of Puerto Rico is likely to be relevant for Congress as the House and Senate monitor the Puerto Rico Oversight, Management, and Economic Stability Act (PROMESA) enacted during the 114 th Congress (discussed elsewhere in this report and in other CRS products) in response to the island's financial crisis. Legislation introduced in the 115 th Congress, discussed elsewhere in this report, could affect the island's political status. In addition, the House and Senate could choose to respond to the 2017 plebiscite through oversight, legislation, or both. (Congress also could choose to take no action.) Finally, before proceeding, it is noteworthy that much of the status debate in Puerto Rico concerns attitudes surrounding past or future plebiscites. Whether in the past or future, Puerto Rico may choose to hold its own plebiscites without congressional authorization. Recently, however, plebiscite supporters have argued that federal support for a plebiscite could increase the perceived legitimacy of the results. Plebiscites are not required to revisit status. Whether or not a plebiscite were held, Congress could admit Puerto Rico as a state, or decline to do so, at its discretion, through statute. Puerto Rico is a U.S. territory subject to congressional authority derived from the Territory Clause of the U.S. Constitution. The Territory Clause grants Congress "Power to dispose of and make all needful Rules and Regulations respecting the Territory or other Property belonging to the United States." Congress has enacted various statutes to address specific matters concerning the island's political status. Puerto Rico's current political status, as determined by federal statute (or otherwise, as noted), is summarized briefly below. After military governance since the United States acquired Puerto Rico in 1898, Congress established a civilian government on the island in 1900. Among other points, the Foraker Act established an "executive council" consisting of a presidentially appointed civilian governor and various department heads. The new government also included a popularly elected House of Delegates (which shared decisionmaking power with the executive council) and a U.S.-style judiciary system. The Foraker Act also established the Resident Commissioner position to represent island interests in Washington. These duties came to include nonvoting service in the U.S. House of Representatives (the primary role of the Resident Commissioner today). Through the Jones Act (1917), Congress authorized appropriations for legislative staff and franking privileges for the Resident Commissioner. Devoted primarily to strengthening Puerto Rico's civil government, the Jones Act also extended U.S. citizenship to Puerto Ricans and established a bill of rights for the island. Major governmental changes included establishing a three-branch government similar to the one on the mainland. Congress recognized island authority over matters of internal governance in 1950 through the Federal Relations Act (FRA) and when it approved the island's Constitution in 1952. No major status changes have occurred since. After enactment of the FRA and approval of the territorial constitution, Puerto Rico became known formally as the "Commonwealth of Puerto Rico." Use of the word "commonwealth" and whether the term carries particular legal or political significance is a topic of substantial historical and scholarly debate—most of which is not addressed herein. A brief summary of the competing major perspectives, however, provides important context for understanding the ongoing status debate. Some contend that Puerto Rico's commonwealth status signifies a unique recognition somewhere between territory and state. This perspective is often called "enhanced commonwealth" or "new commonwealth." As longtime territories scholar Arnold H. Leibowitz has summarized, those holding this view have argued that more than local self-government was achieved by the 1950-1952 legislation. It contends that a new legal entity was created with a unique status in American law: the Commonwealth, a status which is an internationally recognized non-colonial status.... Most important, in this view, Commonwealth is not a "territory" covered by the 'Territory Clause' of the Constitution, nor quite obviously is it a state; rather, Commonwealth is sui generis and its judicial bounds are determined by a "compact" which cannot be changed without the consent of both Puerto Rico and the United States. Others, however, contend that, at least in the Puerto Rican context, the term "commonwealth" does not hold particular legal or political significance. From this viewpoint, "commonwealth" is a stylistic or historical term of art, as used in the formal names of states such as the Commonwealth of Pennsylvania. Some also suggest that commonwealth refers to a form of government, but does not designate a unique nonterritorial status. As Leibowitz has observed, From the outset the non-Commonwealth parties in Puerto Rico, seeking either Statehood or independence ... questioned the concept of the Commonwealth. They have argued that although Congress may delegate powers to a territorial government, the broad powers granted to Congress under the Territorial Clause of the Constitution and the implied powers of the national government remain and may be exercised should the need arise. Further they cite the legislative history of Public Law 600 [the FRA] to challenge the compact and Commonwealth concept. Debate over significance of the "commonwealth" term notwithstanding, action by Congress would be necessary to alter Puerto Rico's political status. Doing so, of course, would require passage of legislation by Congress and approval by the President. Finally, those rejecting the status quo also generally suggest that Puerto Rico's current status was not intended to be—or perhaps should not be—permanent, and that statehood or independence are natural next steps. The dominant Democratic and Republican party labels found in the mainland United States do not necessarily translate to Puerto Rican politics. In Puerto Rico, politics tends to revolve around three status perspectives represented by the three most established political parties: The status quo or "procommonwealth" position is generally associated with the Popular Democratic Party (PDP/PPD). The prostatehood position is generally associated with the New Progressive Party (NPP/PNP). The independence position is generally associated with the Independence Party (PIP or Independ en t istas ). In recent years, the PIP has not received sufficient electoral support to be certified a major party, but the independence perspective continues to be a factor in the status debate. Views within the three major parties, as well as among other parties and interest groups, are not necessarily uniform. These differences regularly produce active factional groups or officially recognized minor parties. The PDP, NPP, and PIP nonetheless remain the most consistent partisan forces in Puerto Rican politics. Other options that call for modified versions of the current commonwealth status or independence may appeal to members of one or more parties. Typically, the two major perspectives other than the status quo, statehood, or independence are (1) "enhanced commonwealth" and (2) "free association." The former arguably signals a semiautonomous status whereas the latter suggests independence with closer ties to the United States than a more traditional independence option. The viability of the "enhanced commonwealth" position is not universally accepted. At the federal level, positions on status do not necessarily follow clear partisan patterns. For those Members of Congress who have firm positions on status, personal preference or constituent issues appear to be key motivations. Particularly in recent years, members of both parties in Congress have generally argued that if the island is to choose a different status, clear consensus is necessary among the Puerto Rican people, regardless of the selected option. Before the 2017 plebiscite, Puerto Rico had held five status plebiscites or referenda since adopting its current relationship with the United States. These votes were held in 2012, 1998, 1993, 1991, and 1967. Ballot wording and options during each plebiscite or referendum differed. Most recently, in 2012, voters were asked to answer two questions: (1) whether they wished to maintain Puerto Rico's current political status; and (2) regardless of the choice in the first question, whether they preferred statehood, independence, or to be a "sovereign free associated state." Figure 2 shows a sample ballot. According to results certified by the Puerto Rico State Elections Commission, approximately 54.0% of those who cast ballots answered "no" to the first question. In the second question, approximately 61.2% of voters chose statehood. However, results of the plebiscite were controversial. Debate focused on whether almost 500,000 blank answers on the second question should be included in the total, thereby affecting whether any option received a majority. A concurrent resolution approved by the territorial legislature and supported by PDP Governor Alejandro García Pad illa (who was elected on the same day as the plebiscite) contended that the results were "inconclusive." Another CRS report provides additional detail about the 2012 plebiscite. After Governor García Padilla assumed office in 2013, momentum toward revisiting status waned on the island. As explained below, interest in status rebounded in 2016. In Washington, the House and Senate provided federal funds to support a future plebiscite. Specifically, in the FY2014 omnibus appropriations law, Congress appropriated $2.5 million for "objective, nonpartisan voter education about, and a plebiscite on, options that would resolve Puerto Rico's future political status." These plebiscite-education funds remain available until expended, but Congress placed conditions on their release that appear to exclude the "enhanced commonwealth" status option as a choice on the ballot. As discussed below, the Justice Department determined in 2017 that enhanced commonwealth remained inconsistent with the U.S. Constitution. In the 2016 general election, Puerto Rico voters selected NPP candidates for both the Governor and Resident Commissioner posts. The prostatehood NPP also retained majorities in the territorial House and Senate. Governor-Elect Ricardo Rosselló announced that he "intend[ed] to make joining the union [as a state] the central focus of his administration." Soon after the November election, some in the NPP began urging congressional action to admit Puerto Rico as a state. In his election night victory speech, according to one media report, Rosselló called his election an "'unequivocal mandate to tell the world that the transition to statehood has started,' which he will promote through the Tennessee Plan." The "Tennessee Plan" is a term of art referring to the method by which Tennessee and six other states joined the union. Each territory employed this method somewhat differently, but the central thrust of the Tennessee Plan involves organizing a political entity that is essentially a state in all but name. Steps typically include drafting of a state constitution, election of state officers, and sending an elected congressional delegation to Washington to lobby for statehood. These developments notwithstanding, there is no single path to statehood. Changing Puerto Rico's political status by the Tennessee Plan or any other method ultimately would require a statutory change by Congress with presidential approval. In January 2017, Rosselló assumed the governorship and the NPP assumed the majority in the legislature. Puerto Rico was thus now primarily represented by a Governor, legislative majority, and Resident Commissioner who publicly favored statehood. On February 3, 2017, the legislature enacted, and the Governor subsequently signed, legislation setting the June 11, 2017, plebiscite date. The new NPP government framed the 2017 plebiscite as the first "sanctioned" by the federal government (through the FY2014 appropriations language discussed above). The legislature also characterized the 2017 plebiscite as a way to "reassert the desire for decolonization and the request for Statehood" from 2012. Similar arguments that had surrounded the previous plebiscite language resurfaced in 2017. Similar criticisms also emerged from those who opposed the plebiscite. As explained below, the initial ballot was subsequently amended after the U.S. Department of Justice (DOJ) declined to certify the federal funds appropriated in FY2014 (discussed above) to administer the plebiscite. NPP supporters argued that the 2012 plebiscite established that Puerto Rican voters preferred a nonterritorial option, and that statehood or a form of independence were the only constitutionally permissible choices. The plebiscite law thus included two "non-territorial and non-colonial political status" options on the ballot: (1) "Statehood" and (2) "Free Association/Independence." The law further specified that only ballots marking one of those options would be counted—a reference to controversy over "blank" ballots believed to be cast in protest in 2012. The law also directed that if the "Free Association/Independence" option received a majority in the June 11 plebiscite, an October 8, 2017, referendum would be held for voters to select from these two choices. Both free association and independence would entail Puerto Rico becoming an independent country. The former suggests an ongoing, mutually negotiated relationship in which the United States might continue to provide some benefits or services, such as the United States today has with the Western Pacific nations of the Federated States of Micronesia (FSM), the Republic of Micronesia, and the Republic of Palau. PDP supporters objected to the ballot wording and choices. They argued that the ballot improperly omitted a status-quo option and was biased to favor a statehood outcome. After the legislature enacted the initial law establishing the plebiscite date and ballot, attention turned to whether the U.S. Justice Department would approve releasing the federal funds appropriated in FY2014. Importantly, Puerto Rico does not require federal approval to conduct a plebiscite or to otherwise reconsider its political status, but plebiscite supporters argued that federal approval would enhance the vote's perceived legitimacy in Washington. On April 13, 2017, Acting Deputy Attorney General Dana Boente wrote to Governor Rosselló that "multiple considerations preclude [DOJ] from notifying Congress that it approves of the plebiscite ballot and obligating the funds." According to the letter, "the Department does not believe that the results of the 2012 plebiscite justify omitting Puerto Rico's current status as an option on the [2017] ballot." Boente explained that DOJ also had determined that the ballot language included "several ambiguous and potentially misleading statements, which may hinder voters' ability to make a fully informed choice as well as efforts to ascertain the will of the people from the plebiscite results." In particular, DOJ raised concerns about what it regarded as deficiencies in how U.S. citizenship rights were explained in the "statehood" ballot description; and the chance that voters could "misperceive" the "free association" option as a constitutionally impermissible form of "enhanced commonwealth." After DOJ issued its determination, attention shifted back to the island. As discussed briefly below, the prostatehood government amended the plebiscite law to include a commonwealth option. Soon after the DOJ issued its April 13 letter, the Rosselló Administration and the NPP majority in the legislature announced that they would amend the plebiscite law. The amended "statement of motives" declared that,"[D]ue to the position stated by the U.S. Department of Justice, [the Legislative Assembly has] acted, under protest, on [DOJ's] recommendation to include the current territorial status among the options, so that the Plebiscite may be fully supported by the Federal Government." As Figure 3 below shows, the revised ballot included three options: (1) statehood, (2) "free association/independence," and (3) "current territorial status." The Justice Department did not formally respond to the ballot changes before voters went to the polls. However, supporters framed the new ballot options as tantamount to federal endorsement for the plebiscite. Opponents noted that the department had not approved the language. Changing the ballot language was intended to address the Justice Department's concerns, but it also reignited political controversy among the island's political parties. The Independence Party (PIP), which initially announced that it would encourage its supporters to participate in the plebiscite in hopes of defeating statehood, changed its position. In light of what it regarded as a colonial "commonwealth" ballot option now being included, the PIP announced that it would boycott the plebiscite, as did the PDP, in addition to some other nonparty groups. PDP leadership called for repealing the plebiscite law and beginning anew. On June 11, 2017, voters in Puerto Rico chose among the three options on the revised plebiscite ballot. 97.2% of voters chose statehood, 1.5% of voters chose free association/independence, and 1.3% of voters chose the "current territorial status." Turnout for the plebiscite was 23% (approximately 518,000 of 2.3 million voters). In anticipation of a statehood victory in the plebiscite, the territorial legislature enacted, and the Governor signed, legislation in June 2017 to pursue a "Tennessee Plan" path to statehood, including appointing a "delegation" to advocate for statehood before the House and Senate in Washington. The PDP opposition criticized the law and vowed to challenge it in court and in future elections. As discussed elsewhere in this report, the House and Senate may determine how or whether to respond to these developments. Two status bills have been introduced in the 115 th Congress. One proposes statehood, while the other proposes a form of independence. Brief discussion appears below. One day after assuming office, Puerto Rico's newly elected Resident Commissioner, Jenniffer González-Cólon, introduced legislation to admit the island as a state. H.R. 260 proposes that if voters choose statehood in the plebiscite provided for in the FY2014 omnibus appropriations law (discussed previously), Puerto Rico would join the union as a state by January 3, 2025. Separate legislation, introduced in February 2017, would require the Puerto Rico legislature to "provide for a referendum" between two status options. Specifically, H.R. 900 , introduced by Representative Gutiérrez, proposes a popular vote between independence and free association. The bill also authorizes treaty negotiations to implement either outcome. Unlike H.R. 260 , H.R. 900 would permit mainlanders (or others) of Puerto Rican descent to participate in the referendum. The bill specifies voting eligibility for those "born in Puerto Rico" or those who "[have] a parent who was born in Puerto Rico." Status was not a major component of debate in the 114 th Congress. Status was, however, a contextual issue as Congress considered legislation related to the island's ongoing economic crisis. The 114 th Congress did not enact any legislation directly affecting Puerto Rico's political status, but committees held hearings that partially addressed the topic. One bill devoted to Puerto Rico's political status was introduced in the 114 th Congress. H.R. 727 (Pierluisi) would have authorized the Puerto Rico State Elections Commission to "provide for a vote" in the territory on admitting Puerto Rico as a state. The bill did not advance beyond introduction. H.R. 727 specified that the proposed ballot "shall" include a single question: "Shall Puerto Rico be admitted as a State of the United States? Yes___ No___." The bill further specified a statehood admission process to be followed, to conclude on January 1, 2021, if a majority of voters selected statehood. Much of the status debate emphasizes governance, political participation, and democratic principles rather than economic issues or other policy matters. Furthermore, the relationship between status and economics is subject to ongoing debate, with some arguing that the two issues are inextricably linked and others replying that the status debate distracts from long-standing economic problems. Most recently, Puerto Rico's ongoing financial crisis has, however, shaped some aspects of recent attention to status, as discussed briefly below. As noted previously, economic issues are otherwise beyond the scope of this report. In June 2016, Congress enacted legislation responding to an ongoing economic crisis in Puerto Rico. The Puerto Rico Oversight, Management, and Economic Stability Act (PROMESA; P.L. 114-187 ) establishes a process for restructuring the island government's public debt. PROMESA also establishes a federal oversight board, formally known as the Financial Oversight and Management Board for Puerto Rico, with "broad powers of budgetary and financial control over" the island. Status was not a central component of the congressional deliberation over PROMESA, although some Members addressed status in testimony or floor statements. Some hearings also addressed the topic. Perhaps most consequentially for the status debate, some of those who opposed PROMESA, including some Members of Congress, characterized the broad powers provided to the oversight board as undemocratic. In particular, opponents objected to the board's powers to approve fiscal plans submitted by the Governor and to approve territorial budgets, among others. Although not necessarily addressing the oversight board explicitly, proponents generally argued that, in the absence of bankruptcy protection for territories, PROMESA was necessary to help the island's government to restructure its debts in an orderly fashion. Critics, on the other hand, contended that the oversight board undermines the mutually agreed status relationship established in 1952. Connections between PROMESA and status also were a component of the 2016 Puerto Rico elections (discussed previously). One brief section of PROMESA explicitly addresses status. Section 402 of the law states that "[n]othing in this Act shall be interpreted to restrict Puerto Rico's right to determine its future political status, including" through another plebiscite as authorized in the FY2014 omnibus appropriations law ( P.L. 113-76 ). A December 2016 report released by a congressional task force established in PROMESA (devoted primarily to economic issues) recommended that if such a plebiscite is held, Congress "analyze the result ... with care and seriousness of purpose, and take any appropriate legislative action." Just as status provides context for debates about other areas of public policy, status also can arise in legal cases that primarily concern other topics. In June 2016, the Supreme Court of the United States issued an opinion in Puerto Rico v. Sanchez Valle . This report does not provide a legal overview of the case, which concerned the application of the U.S. Constitution's Double Jeopardy Clause to criminal prosecutions in Puerto Rico. As another CRS product explains, the case examined "whether defendants in a criminal case can be prosecuted under the local laws of Puerto Rico if they have been previously convicted under federal criminal law for the same conduct." The Court's opinion did not alter Puerto Rico's political status. However, those interested in the status debate followed the case closely in anticipation of how the Court would describe the island's relationship with the United States. The majority opinion addressed the island's political and status history to establish background for the double-jeopardy analysis. Particularly important for status discussions, the Court traced the "ultimate source" of Puerto Rico's prosecutorial power to Congress. As the Court summarized, Puerto Rico's "Constitution, significant though it is, does not break the chain" of congressional authority. As CRS has written elsewhere, although Sanchez Valle was "limited [and] did not address broader issues of Puerto Rico's sovereignty," the holding suggests that "when Congress passes legislation affecting Puerto Rico's government, as it did recently with the passage of ... PROMESA, Sanchez Valle would not appear to suggest a limit on Congress's constitutional authority over Puerto Rico." Puerto Rican politicians representing diverse perspectives have suggested that Sanchez Valle signals that the commonwealth status does not provide the local autonomy that some, particularly in the PDP, have long suggested. In addition, some have suggested that Sanchez Valle is inconsistent with the U.S. government's previous characterization to the United Nations (U.N.) of Puerto Rico's status. In brief, the U.N. determined in 1953 that Puerto Rico, in light of enactment of the territorial constitution and the Federal Relations Act, was sufficiently self-governing to terminate a previous U.S. reporting requirement that applied to non-self-governing territories. However, meetings of the U.N. Special Committee on Decolonization remain a venue for debating the island's political status and for U.N. monitoring of the island's relationship with the United States. At the Special Committee's June 2016 meetings, after Sanchez Valle , representatives of various Puerto Rican parties and interest groups testified that the ruling suggested the need to reexamine the island's relationship with the United States. In particular, Governor García Padilla (PDP) has suggested that in light of Sanchez Valle and "through PROMESA, the United States has effectively backtracked from the democratic accomplishments of 1953 and must respond for this new position before the international community." The Special Committee's attention to Puerto Rico post- Sanchez Valle is not necessarily remarkable in and of itself, as the committee and the U.N. regularly examine territorial issues worldwide. Furthermore, as a practical matter, the Decolonization Committee's inquiries on Puerto Rico tend to be comparatively less prominent in Washington policy debates than in those held on the island. Consequently, the topic might or might not be a prominent aspect of future congressional attention to Puerto Rico's status debate. Nonetheless, it is potentially noteworthy that both the departing and incoming Governors, representing two opposing political parties (PDP and NPP, respectively), testified that Sanchez Valle raises questions about the island's degree of self-governance.

Summary: Puerto Rico lies approximately 1,000 miles southeast of Miami and 1,500 miles from Washington, DC. Despite being far outside the continental United States, the island has played a significant role in American politics and policy since the United States acquired Puerto Rico from Spain in 1898. Puerto Rico's political status—referring to the relationship between the federal government and a territorial one—is an undercurrent in virtually every policy matter on the island. In a June 11, 2017, plebiscite (popular vote), 97.2% of voters chose statehood when presented with three options on the ballot. Turnout for the plebiscite was 23.0% of eligible voters. Some parties and other groups opposing the plebiscite had urged their bases to boycott the vote. (These data are based on 99.5% of precincts reporting results.) After initially including only statehood and free association/independence options, an amended territorial law ultimately permitted three options on the plebiscite ballot: statehood, free association/independence, or current territorial status. Before the latest plebiscite, Puerto Ricans most recently reconsidered their status through a 2012 plebiscite. On that occasion, voters were asked two questions: whether to maintain the status quo, and if a change were selected, whether to pursue statehood, independence, or status as a "sovereign free associated state." Majorities chose a change in the status quo in answering the first question, and statehood in answering the second. The results have been controversial. If Congress chose to alter Puerto Rico's political status, it could do so through statute. Ultimately, the Territory Clause of the U.S. Constitution grants Congress broad discretion over Puerto Rico and other territories. Congress has not enacted any recent legislation devoted specifically to status. Two bills have been introduced during the 115th Congress. H.R. 260 proposes to admit Puerto Rico as a state if residents choose statehood in a plebiscite. H.R. 900 proposes a popular vote between independence and free association (which entails an ongoing relationship between independent countries). In the 114th Congress, H.R. 727, which did not advance beyond introduction, would have authorized a plebiscite on statehood. Even in seemingly unrelated federal policy debates, Puerto Rico status often arises at least tangentially. In the foreseeable future, oversight of Puerto Rico is likely to be relevant for Congress as the House and Senate monitor the Puerto Rico Oversight, Management, and Economic Stability Act (PROMESA; P.L. 114-187; 48 U.S.C. §2101 et seq.) enacted during the 114th Congress. Status also shaped the policy context surrounding the U.S. Supreme Court's decision in the 2016 Sanchez Valle case. This report does not provide an economic or legal analysis of these topics; instead, it provides policy and historical background for understanding status and its current relevance for Congress. This report will be updated in the event of significant legislative or status developments.