From the Summary: "Kosovo, a country in the Western Balkans with a predominantly Albanian-speaking population, declared independence from Serbia in 2008, less than a decade after a brief but lethal war. It has since been recognized by about 100 countries. The United States and most European Union (EU) member states recognize Kosovo. Serbia, Russia, China, and various other countries (including five EU member states) do not. [...] Congress was actively involved in debates over the U.S. response to a 1998-1999 conflict in Kosovo and subsequently supported Kosovo's declaration of independence. Today, many Members of Congress continue to support Kosovo through country- or region-specific hearings, congressional visits, and foreign assistance funding levels averaging around $50 million per year since 2015."
CRS Report for Congress, R46175
Congressional Research Service: https://crsreports.congress.gov/