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Rep. Lloyd Doggett is first Democrat to publicly call for Biden to step down as party's nominee
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Pressure is building on Biden to step aside. But many Democrats feel powerless to replace him
![Alex Brandon Sen. Bernie Sanders, I-Vt., center, attends a Congressional picnic on the South Lawn of the White House in Washington, Tuesday, June 4, 2024. (AP Photo/Alex Brandon)](https://mapi.associatedpress.com/v2/items/0560a3b6f5784fbf9674de087992bbfb/preview/preview.jpg?s=680x&wm=false)
Sen. Bernie Sanders, I-Vt., center, attends a Congressional picnic on the South Lawn of the White House in Washington, Tuesday, June 4, 2024. (AP Photo/Alex Brandon)
![Evan Vucci President Joe Biden listens during a visit to the D.C. Emergency Operations Center, Tuesday, July 2, 2024, in Washington. (AP Photo/Evan Vucci)](https://mapi.associatedpress.com/v2/items/2f022c7b9f4949d2a9f24c466c091900/preview/preview.jpg?s=680x&wm=false)
President Joe Biden listens during a visit to the D.C. Emergency Operations Center, Tuesday, July 2, 2024, in Washington. (AP Photo/Evan Vucci)