This event involves a Kansas tribe voluntarily ending a contract with ICE - a business decision by a sovereign entity. Constitutional impact is minimal: rule_of_law (1) reflects minor enforcement cooperation change, civil_rights (1) reflects tangential immigration detention issues. Severity multipliers at 0.8 reflect high reversibility (new contracts possible), low durability (business decision), weak precedent (tribal contract decisions common). Mechanism modifier 0.7 for enforcement_action that's actually contract termination. Scope 0.6 for single_state/narrow population. Final A-score 0.54 is far below threshold. B-score elevated by novelty (tribal-ICE contract angle) and timing (immigration enforcement debates), but still modest at 7.41. This is voluntary contract termination with no constitutional mechanism, no rights violations, and no systemic impact - classic noise.