Sen. John Fetterman increasingly goes it alone, worrying some fellow Democrats as they struggle to push back against Trump ...

A 2024 letter from his ex-chief of staff, Adam Jentleson, to a treating neuropsychiatrist, warned that Fetterman was showing signs of paranoia and self-isolation, and may have stopped taking his ...

Fetterman, who is facing scrutiny after former staffers have raised concerns about his mental health, has missed nearly every committee hearing and regularly skips votes.

Fetterman’s run-in with Murray is just one example of his isolation from his fellow Democrats ... His relationship with the Democratic Party has become increasingly strained while he’s ...

knew her party had a problem ... some who spoke with NBC News worried whether Fetterman is having cognitive struggles that may be exacerbating his isolation. The House Democratic lawmaker ...