President Trump campaigned on a pledge to crack down on illegal immigration. But since taking office, he’s primarily targeted several longstanding programs that give migrants lawful ways to come to the U.

State and local leaders across the country are bracing for a tidal wave of aggressive immigration policies and possible mass deportations that President Donald Trump has vowed to enact in the hours and days following his inauguration Monday.

The announcement came a day after the U.S. secured the release of six hostages from the South American country.