Tariff announcement represents executive trade policy authority within constitutional bounds. Rule_of_law (2): uses existing statutory authority but tests international treaty obligations. Separation (2): executive action in foreign commerce, minimal congressional bypass. Capture (3): protectionist policy favoring domestic industries over international cooperation norms. Mechanism modifier 1.15 for policy_change with international scope modifier 1.2. Base score 11.8 * severity adjustments = 15.2. B-score: high media_friendliness (8) for economic impact stories, moderate outrage_bait (6) from affected industries/consumers. Layer 2 shows pattern_match (5) with campaign promises, timing (4) for early-term agenda setting. Intentionality moderate (6) for strategic announcement with specific date. Final B 23.1. Both scores below 25 threshold, D=-7.9. Tariff policy is routine executive authority despite economic significance.