States under Article 1, section 10, Clause 3: the Compact Clause
“No State shall, without the Consent of Congress, unless actually invaded, or in such imminent Danger as will not admit of delay.” This means the states being invaded by illegals can act on their own. Article 4 section 4 specifically points out the federal government’s responsibility is to protect all states from invasion. The Federal government has intentionally failed to stop the invasion, so the states can do it without the Federal government!