Donald J. Trump is an American businessman, television personality, and politician who served as the 45th president of the United States from January 20, 2017, to January 20, 2021. He is a member of the Republican Party and has been a prominent figure in American politics and media for decades. Trump was born on June 14, 1946, and prior to his presidency, he was known for his real estate ventures and as the host of the reality television show 'The Apprentice.'