President Joe Biden on Thursday mistakenly referred to Vice President Kamala Harris as "Vice President Trump" in the opening question of his highly-anticipated solo press conference in Washington. "Look, I wouldn't have picked Vice President Trump to be vice president [if] I think she's not qualified to be president," Biden said, confusing his second-in-command with his November election opponent, former President Donald Trump. A reporter pointed out Biden's mistake in the final question of the press conference, asking the president to comment on the blunder after Trump us