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,

In today’s edition, we examine John Fetterman’s place in the Senate, where the Pennsylvania Democrat is increasingly on an island.

Pennsylvania Sen. John Fetterman, the lawmaker known for his unconventional and irreverent brand of politics, is in the news again after a blowup at a closed-door meeting with union allies and former staff aides who aired concerns about his mental health.

The former Pennsylvania lieutenant governor went on to defeat Republican Mehmet Oz in a key Senate victory for Democrats despite the concerns about his health.What To KnowFetterman entered Washington,