 After pressure to get out of the race from some Democratic leaders, the president firing back in a new interview over continued questions about fitness for office and that debate performance. Biden now asking, where are the fact checks of the repeated lies that Trump told during that debate? Well, tonight, the president is in Las Vegas. And after Nancy Pelosi's comments that she awaits the president's decision, George Clooney's words and now Congressman Adam Schiff's warning, is Biden determined to be the nominee? Here's our chief White House correspondent, Mary Bruce, tonight.