National Guard mobilization for domestic law enforcement represents significant constitutional damage across multiple vectors. Rule_of_law (4.5): Militarization of civilian law enforcement violates Posse Comitatus principles and normalizes military involvement in domestic policing. Separation (4.2): Executive deployment of military assets for immigration enforcement without clear statutory authorization challenges federalism and separation of powers. Civil_rights (4.8): Broad deployment creates chilling effects on immigrant communities, risks Fourth Amendment violations through military-style operations, and threatens due process. Capture (3.5): Use of state National Guard units for federal immigration priorities demonstrates institutional capture. Violence (2.8): Military presence in civilian contexts escalates potential for force. Severity multipliers: durability 1.15 (operational precedent), reversibility 1.1 (can be rescinded but precedent remains), precedent 1.25 (significant normalization of military domestic role). Mechanism modifier 1.35 for enforcement_action with military component. Scope modifier 1.25 for 19-state multi_state deployment. B-score elevated by outrage_bait (8.5, military imagery), novelty (7.5, scale unprecedented), media_friendliness (8.0, visual drama), and Layer 2 timing (7.0, early administration signal). Intentionality moderate (9) given deliberate announcement scope. D-score: +18.9 indicates List A, but both scores exceed 25 threshold, making this Mixed classification with strong constitutional damage component.