House Republicans are questioning Bruce Reed and other top aides about Biden’s cognitive health. Here’s what to know.

Bruce Reed, who served former President Joe Biden for the entirety of his term, entered a House office building at 9:56 a.m. Tuesday and did not take any questions from reporters.

Former Biden deputy chief of staff Bruce Reed is appearing before House Oversight Committee investigators on Tuesday.

Bruce Reed was a member of the Biden "politburo," while Anita Dunn worked with Biden in the Obama White House.

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