According to Jin10 Data reports, the elected President of the United States and Republican Donald Trump officially took his oath at the inauguration ceremony held in Washington D.C., becoming the 47th President of the United States. The swearing-in ceremony was presided over by Chief Justice John Roberts of the U.S. Supreme Court, with Trump completing his oath under Roberts' guidance. The elected Vice President Pence also officially took his oath on that day, assuming office as Vice President of the United States.