From the Document: "Congress maintains interest in El Salvador, a small Central American nation. A large percentage of El Salvador's population has lived in the United States since the Salvadoran civil conflict (1980-1992), and the country is a source of irregular migration to the United States. During the 1980s, the U.S. government spent billions of dollars to support the Salvadoran government's counterinsurgency efforts against the leftist Farabundo Martí National Liberation Front (FMLN). The United States later supported a 1992 peace accord that ended the conflict and transformed the FMLN into a political party. Over the next few decades--and despite periodic tensions--the United States worked with both leftist FMLN and conservative National Republican Alliance (ARENA) administrations. However, popular disaffection with corruption and insecurity under both parties led to the election of political outsider Nayib Bukele in 2019. Relations between the United States and El Salvador have deteriorated under Bukele's increasingly authoritarian rule."
CRS Report for Congress, R47083
Congressional Research Service: https://crsreports.congress.gov/