President-elect Donald Trump will sign a series of executive orders designed to beef up security at the southern border by relying more on the U.S. military and redefining who gets to become an American, preparing to make good on his defining political promise to crack down on immigration.

President Joe Biden on Monday pardoned Dr. Anthony Fauci, retired Gen. Mark Milley and members of the House committee that investigated the Jan. 6 attack on the Capitol, in an extraordinary use of the powers of the presidency in his final hours to guard against potential ''revenge'' by the incoming Trump administration.

President Donald Trump will sign executive orders Monday rolling back protections for transgender people and terminating diversity, equity and inclusion programs within the federal government, incoming White House officials said.