White House press secretary Karine Jean-Pierre is holding a White House briefing at 1 p.m. as tensions continue to rise within the Democratic Party, with some calling for uniting around President Joe Biden and others abandoning him as the presumptive Democratic presidential nominee.  

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Questions about the president’s mental acuity are likely to come up during the briefing on Tuesday. During a tense exchange with the press earlier this week, Jean-Pierre confirmed that a Parkinson’s disease specialist visited the White House three times while refusing to give the neurologist’s name.

Democrats in both the House and the Senate are holding caucus meetings on Tuesday amid volatile intraparty squabbles on Biden’s reelection vulnerabilities.