On a call with reporters Friday, Mauricio Claver-Carone, the U.S. special envoy to Latin America, said Grenell will tell Maduro to take back all the Venezuelan criminals and Tren de Aragua gang members that have been “exported to the United States, and to do so unequivocally and without condition.”

A senior Trump administration official traveled to Venezuela to urge President Maduro's government to accept deported migrants, a U.S. official said.