Donald Trump is the 45th and current President of the United States; he took office on January 20, 2017.
Previously, he was a real estate mogul and a former reality TV star.
In 1980, he opened the Grand Hyatt New York, which made him the city's best-known developer.
In 2004, Trump began starring in the hit NBC reality series The Apprentice .
Trump turned his attention to politics, and in 2015 he announced his candidacy for president of the United States on the Republican ticket.