From the Document: "Venezuela remains in a deep crisis under the authoritarian rule of Nicolás Maduro of the United Socialist Party of Venezuela (PSUV). Maduro, narrowly elected in 2013 after the death of President Hugo Chávez (1999-2013), began a second term on January 10, 2019, that is widely considered illegitimate. Since January 2019, Juan Guaidó, president of Venezuela's democratically elected, opposition-controlled National Assembly, has sought to form a transition government to serve until internationally observed elections can be held. The United States and 57 other countries recognize Guaidó as interim president, but he has been unable to use that support to wrest power from Maduro."
CRS In Focus, IF10230
Congressional Research Service: https://crsreports.congress.gov/