The president’s Day 1 actions included directives that fly in the face of legal limits on involving the military in domestic operations and the constitutional guarantee of birthright citizenship.

President Donald Trump's administration has directed U.S. prosecutors to criminally probe local officials who resist immigration enforcement efforts, intensifying a sweeping crackdown that Trump launched the day he took office.

A memo from the acting deputy attorney general instructs officials to identify state and local laws and policies that “threaten to impede” the Trump administration's immigration efforts.

Thousands of additional active duty US troops are being ordered to the southern US border with Mexico, just two days after President Donald Trump mandated that the US military step up its presence there,

The new administration has also halted all refugee travel and processing, leaving thousands stranded as they wait to come to the US.

Authorities on Tuesday were investigating a fatal shooting of a U.S. Border Patrol agent that also left a suspect dead and another injured on a Vermont highway near Canada, authorities said.

A U.S. Border Patrol agent, who was shot and killed Monday during a traffic stop in Vermont, has been identified as David C. Maland, federal and state officials announced Tuesday.