Following the conflicts in the late 1990s in the countries of the former Yugoslavia (Serbia, Kosovo, Bosnia-Herzegovina, Macedonia, Montenegro, Croatia, and Slovenia), the prospect of membership in the Euro-Atlantic community, and the active presence of the United States in the region referred to as the Western Balkans, provided a level of stability that allowed most of the countries of the region to pursue reform and adopt Western values. During this time, Slovenia (2004) and Croatia (2013) joined the European Union (EU). These countries, along with Albania (2009), also joined the North Atlantic Treaty Organization (NATO). Montenegro became NATO's 29th member on June 3, 2017. Other nations of the Western Balkans are at various stages on the path toward EU or NATO membership. Along with Serbia, Kosovo stands at the center of the Western Balkans and occupies a key strategic juncture at the social, political, and geographic crossroads between Eastern and Western Europe. On February 17, 2018, Kosovo marked its 10th anniversary of independence. With the assistance of a number of international organizations, and despite its tense relationship with neighboring Serbia, which does not recognize Kosovo's independence, Kosovo has become a viable, democratic, and stable state. Although Kosovo faces major economic, rule-of-law, and corruption challenges, many observers believe Kosovo has made significant progress in strengthening its democratic institutions, its free-market economy and its Euro-Atlantic aspirations. The United States has had a long history of involvement in Kosovo, dating to the conflicts in the Balkans during the 1990s and since Kosovo declared its independence, which the United States has recognized. The United States has consistently provided support for the people of Kosovo and its commitment to democratic principles. Kosovo has over the years been one of the largest recipients of U.S. foreign assistance designed to strengthen institutions, human rights, rule of law, and more recently, reconciliation with Serbia and potential integration into the EU. A new "threshold agreement" reached in September 2017 between Kosovo and the U.S. Millennium Challenge Corporation (MCC) has become another element in the U.S. commitment to Kosovo. In March 2018, in one of his first trips to Europe, U.S. Assistant Secretary of State for Europe Wess Mitchell visited Pristina as a further indication of U.S. interest in the region. Nevertheless, some Balkan watchers caution that the United States needs to remain actively engaged in Kosovo even as it supports the EU's efforts to bring Kosovo closer to the EU. Many in the U.S. Congress have long been interested in the Balkans, and in particular, in Kosovo. In addition to a history of hearings on the Balkans, and an active Albania Caucus, established and led by the current ranking minority member on the House Committee on Foreign Affairs, many Members of Congress have been active supporters of U.S. involvement in and commitment to Kosovo's independence and development. During 2017, the U.S. House Democracy Partnership (HDP), as well as several other congressional delegations, visited Pristina to further congressional contacts and reaffirm U.S. commitments. The signing ceremony of the MCC agreement mentioned above was held in the U.S. House of Representatives and witnessed by several Members of Congress, including the cochair of the HDP. The MCC received comments of support from the chairman and ranking Democrat of the House Committee on Foreign Affairs. It is likely that Congress will continue its support for Kosovo and the evolution of Kosovo-Serb relations through its oversight of the Balkans. This report provides a brief overview of Kosovo and U.S. relations with Kosovo.