This event represents a clear judicial check on executive authority with significant constitutional implications. Rule_of_law (4): Supreme Court enforcing constitutional boundaries on executive immigration power, though reversible through legislative action. Separation (5): Direct judicial rejection of executive branch attempt to expand deportation authority under antiquated statute, core separation of powers function. Civil_rights (3): Affects narrow population (Venezuelans) but involves due process protections in deportation proceedings. Mechanism modifier 1.3 for judicial action that constrains executive overreach. Severity: durability 0.9 (can be legislatively addressed), reversibility 0.95 (pause is temporary, precedent matters more), precedent 1.1 (clarifies limits on Alien Enemies Act usage). B-score moderate: novelty high (18th-century law application), media_friendliness high (clear Trump vs Court narrative), but limited viral potential. Layer2 modest: some pattern_match to immigration enforcement debates. Delta +8.26 indicates substantive constitutional event with moderate media attention but not primarily hype-driven.