Minnesota’s defiance of federal immigration law echoes pre–Fort Sumter nullification, forcing Trump to choose between enforcement and letting blue states slide toward open rebellion. But it did operate under a clear supremacy clause that made state obstruction of federal law and occupation of federal property veritable sedition. Once sanctuary states, cities, and counties had established the precedent that, with impunity, they could nullify federal immigration law, then what followed was a logical and mounting descent into the current open defiance of the federal government. But it should accordingly not expect federal funding for its pick-and-choose approach to federal law and property. A majority voted for Trump to enforce immigration law, close the border, end illegal immigration, and deport those who broke federal law.