 President Biden holds a solo news conference later this afternoon as more in the party speak up. Vermont's Peter Welsh has become the first Democrat in the Senate to publicly call for Biden to step aside. And the website Axios reports Senate Leader Chuck Schumer is privately signaling to donors that he's open to Biden dropping out. ABC's Christiane Cordero in Washington. Donald Trump accepting the Republican Party's nomination for the third time as they head to their convention in Milwaukee next week.