From the Summary: "Congress has maintained interest in El Salvador, a small Central American country that also has had a large percentage of its population living in the United States, since the country's civil conflict (1980-1992). In the 1980s, the U.S. government spent billions of dollars supporting the Salvadoran government's efforts against an insurgency led by the leftist Farabundo Marti National Liberation Front (FMLN). The United States is now working with the country's second democratically elected FMLN Administration. […] El Salvador is facing significant security and economic challenges. A truce between the country's major gangs helped lower homicide rates in 2012 and early 2013, but had unraveled before Sánchez Cerén took office and arguably increased the gangs' power. Homicides increased by 57% in 2014 and 70% in 2015. El Salvador posted a homicide rate of 104 per 100,000 in 2015--the highest in the world. Security is a barrier to investment, which has inhibited economic growth. El Salvador's economy grew by roughly 2.4% in 2015, the lowest in Central America."
CRS Report for Congress, R43616
Federation of American Scientists: http://www.fas.org/sgp/crs/index.html