In an exclusive MSNBC interview, Joe Biden says people know the president is a liar as Trump gets ready to unveil his Supreme Court justice -- a deeply unpopular move according to polls - with less than 40 days until the November 3 election. We discuss that and more with Peter Baker, Katie Benner, Jonathan Lemire, Victoria DeFrancesco Soto, David Plouffe, Anne Rimoin, and Michael Beschloss.