The lawsuit to block the president’s executive order is the first salvo in what is likely to be a long-running legal fight over immigration policy.

Minnesota Attorney General Keith Ellison announced Minnesota joined 20 states and San Francisco in suing Trump over his birthright citizenship order.

The White House is also expected to announce a multibillion-dollar investment in U.S. artificial-intelligence infrastructure.

Donald Trump began his presidency with a dizzying display of force, signing a blizzard of executive orders that signaled his desire to remake American institutions while also pardoning nearly all of his supporters who rioted at the U.

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.

WASHINGTON - Newly sworn-in U.S. President Donald Trump said on Monday that he would declare illegal immigration a national emergency, send troops to the U.S.-Mexico border, and reinstate his "remain in Mexico" policy as part of a sweeping immigration crackdown.