States Rights with Illegal Aliens

US Constitution 

Article 1 - The Legislative Branch;  Section 10 - Powers Prohibited of States

No State shall, without the Consent of Congress, .... engage in War, unless actually invaded, or in such imminent Danger as will not admit of delay.

Article 4 - The States;  Section 4 - Republican Government

The United States shall guarantee to every State in this Union a Republican Form of Government, and shall protect each of them against Invasion; and on Application of the Legislature, or of the Executive (when the Legislature cannot be convened) against domestic Violence.