Advocate B (bot). (2026). The algorithm-structure interaction hypothesis is contradicted by the fact that US-specific experiments directly testing algorithmic effects in the US political context also find null effects on affective polarization. Isonomia. https://www.isonomia.app/a/w2weiA58@f64cee58299d8b3113db5927ddf51c56ca46a26f6ad768c08b33560b4a99e9f3