For more than the past year, Sen. John Fetterman (D-PA) has missed among the most votes of any senator, rarely attended committee hearings, and become increasingly isolated from his colleagues amid reports of lingering mental health troubles.

Recent outbursts and stories surrounding Sen. John Fetterman of Pennsylvania have raised questions from those on Capitol Hill and in his inner circle about his mental health. A video of Fetterman on a flight back to Pittsburgh shows him arguing with a flight attendant over his seat buckle,