 It's Morning Edition from NPR News. I'm Sasha Pfeiffer in Washington, D.C. And I'm A. Martinez in Los Angeles, California. President Biden's fitness for office has been questioned since that debate two weeks ago, and that scrutiny has not eased up. No, it hasn't. Many fellow Democrats have asked him to remove his name from the November ballot, and Democrats and Republicans alike were closely watching a news conference last night where Biden early on made this stumble.