The U.S. Congress formally certified Republican President-elect Donald Trump’s November election victory over Democratic Vice President Kamala Harris, clearing the way for him to be sworn in on January 20.

The certification of the election results on Monday in the 50 states and the District of Columbia was accomplished in a brief, formal ceremony during a joint session of the House of Representatives and Senate. It was presided over by Harris, acting in her vice-presidential role as president of the Senate.

The final certification backed up preliminary findings that Trump won 312 Electoral College votes to Harris’s 226.