WASHINGTON - Jerry Falwell Jr., a leading U.S. evangelical Christian whose endorsement played a key role in President Donald Trump’s 2016 victory, has resigned as president of Liberty University, the school said on Tuesday. Falwell, through an attorney, sent a resignation letter late last night to members of Liberty’s board, the Lynchburg, Virginia-based school said in a statement. The news follows conflicting reports about Falwell's next move, after Reuters reported on Monday that his business partner said he had a years-long sexual relationship here involving Falwell's wife and the evangelical leader. Falwell, who served as Liberty’s president for over a decade, did not respond to a request for comment. Falwell, 58, had initially agreed to resign immediately following the Reuters report, but then changed his mind following other media reports about his decision, according to the university. Giancarlo Granda said he was 20 when he met Jerry and Becki Falwell while working as