 President Biden remains in Delaware for now, weathering a case of COVID, as more fellow Democrats call for him to drop out of the race. It's now at least 26 in the House and three in the U.S. Senate. But his campaign manager, Jen O'Malley Dillon, tells MSNBC... We believe on this campaign. We are built for the close election that we are in, and we see the path forward. The president is the leader of our campaign and of the country, and he is...