Miami’s Republican representatives in Congress expressed optimism on Sunday about president Donald Trump’s ability to bring change to Venezuela, as the new president reengages with autocratic ruler Nicolas Maduro and cancels legal protected status for hundreds of thousands of Venezuelans in the U.S.

Six Americans who had been detained in Venezuela in recent months were freed by the government of President Nicolás Maduro after he met Friday with a Trump administration official tasked with urging the authoritarian leader to take back deported migrants who have committed crimes in the United States.

President Trump’s envoy for special missions, Richard Grenell, is delivering an in-person message to Venezuelan leader Nicolás Maduro that there will be consequences if detained Americans are not released and Venezuelan “criminals and gang members” deported from the U.