Feinstein, Back in the Senate, Relies Heavily on Staff to Function

When Senator Dianne Feinstein entered a hearing room this month to reclaim her seat on the Senate Judiciary Committee after a monthslong absence, she was accompanied by a phalanx of aides.

Two staff members settled the 89-year-old California Democrat into a chair at the dais as the assembled senators greeted their ailing colleague with a round of applause. When Ms. Feinstein spoke — during a vote on one of several of President Biden’s judicial nominees whose approval had awaited her return — she appeared to read from a piece of...