This represents a significant constitutional event involving separation of powers. The House rejection of war powers limitations directly impacts the constitutional balance between executive and legislative branches on military action (separation:5, rule_of_law:4). The policy_change mechanism with federal scope and moderate population impact warrants mechanism_modifier:1.3 and scope_modifier:1.2. Violence:3 reflects potential military operations. Capture:2 reflects partisan alignment blocking constitutional checks. Severity multipliers: durability:1.1 (sets precedent for future military actions), precedent:1.2 (weakens War Powers Resolution framework). Base score 24.08 * 1.56 = 37.57. B-score is moderate: dramatic tie vote creates media drama (outrage_bait:6, media_friendliness:7) but limited viral potential (meme_ability:3). Layer 2 shows pattern_match:6 with ongoing executive power expansion narratives. D-score: +18.48 clearly exceeds +10 threshold with A>=25, qualifying for List A.