 On a day when more than a dozen additional Democrats in Congress called on him to drop out of the race, the president's defiance only fueling anxiety within his own party. Sources tell us Senate Majority Leader Chuck Schumer, House Minority Leader Hakeem Jeffries, and former House Speaker Nancy Pelosi have all told Biden he'll lose to Trump and drag down Democrats in Congress. That's ABC's Selena Wang. You're listening to ABC News.