Federal enforcement action against student protesters with documented self-deportation creates substantial constitutional damage (A=39.8) across civil_rights (4.5 - First Amendment assembly/speech), rule_of_law (4.0 - selective enforcement patterns), and election (3.5 - suppression of political expression). Mechanism modifier 1.25 for enforcement_action with chilling effects on protected speech. Severity multipliers reflect moderate durability (1.15 - institutional precedent), reversibility challenges (1.1 - arrest records persist), and significant precedent (1.2 - federal intervention in campus protest). Federal scope modifier 1.15 appropriate. Self-deportation indicates extreme chilling effect beyond immediate targets. B-score 23.4 reflects high outrage potential and strategic timing but falls below threshold. Delta D=+16.4 clearly exceeds +10 threshold with A>=25, qualifying for List A. Not mixed (both thresholds not met). Confidence 0.82 due to limited sourcing (2 identical headlines) but clear constitutional mechanism and documented enforcement pattern.