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.

Following the New York Magazine article, former staffers said Fetterman has avoided basic duties of being Pa.’s senator. “It’s pretty impossible to overstate how disengaged he is,” one said.