Senator John Fetterman is under growing pressure over why backing Israel is his one issue he refuses to compromise on, a bad look for a Democrat whose own state is struggling with basic costs.

• Fetterman said he could disagree with someone on 90% of issues, but Israel is his red line.
• Critics say Israel is another country and shouldn't outrank problems Pennsylvania voters face at home.
• Jon Stewart pressed him on it directly, and Fetterman appeared genuinely puzzled by the point.
• Confronted by reporters, Fetterman refused to answer and accused the outlets of siding with Hamas.
• The charge against him: his position tracks pro-Israel lobby money rather than any real study of the region.

Outlook: Expect more public confrontations as Fetterman keeps defending Israel while questions about his priorities at home intensify.