Senator John Fetterman Threatens to Leave Democratic Party Over Israel Policy

This event involves a single senator's rhetorical threat about party affiliation tied to foreign policy stance, with no constitutional mechanism engaged (norm_erosion_only is minimal and doesn't implicate any of the 7 core drivers). No structural harm to elections, rule of law, separation of powers, civil rights, institutional capture, corruption, or violence. It generates moderate media/political discourse interest but lacks the mechanism substance or strategic distraction weight to cross into List B territory (B<25) or List A (A=0). Classified as Noise given negligible constitutional score and political-theater nature.