 I'm Ben Thomas. President Biden will launch a public event split as the White House pushes back against pressure on him to leave the race after last week's disastrous debate. Saka Magani has more. Texas Congressman Lloyd Doggett is the first Democrat publicly calling for the president to step aside as nominee. And former House Speaker Nancy Pelosi tells MSNBC asking about the president's halting performance is legitimate. To say, is this an episode or is this a