In a flurry of unilateral executive actions, Mr. Trump revived disputed claims of broad presidential authority from his first term — and made some new ones. Court battles seem likely.

Donald Trump took the Oath of Office and was sworn in as the 47th President of the United States. He is only the second man in the nation’s history to return to the Oval Office after a hiatus. He has promised to "act with historic speed" – and on his first day in office,

The president pledged to remove more than 1,000 presidential appointees “who are not aligned with our vision.”

Donald Trump, who overcame impeachments, criminal indictments and a pair of assassination attempts to win another term in the White House, will be sworn in Monday as the 47th U.S. president taking charge as Republicans claim unified control of Washington and set out to reshape the country’s institutions.