Wednesday on the News Hour, more Democrats call on President Biden to exit the race as new polling raises questions about his ability to win critical states. Michigan Gov. Whitmer defends Biden's candidacy and dismisses the idea that she could be a replacement. Plus, we speak with the Czech president about Ukraine's path forward and what a potential second Trump presidency could mean for NATO. PBS News is supported by - https://www.pbs.org/newshour/about/funders