A Trump-appointed judge has handed Minnesota sanctuary policies a victory that mocks federal authority over immigration. By shielding local nullification from a Supremacy Clause challenge, the ruling lets states obstruct enforcement at the border and inside the country, weakening the very tools needed to restore order. The Constitution places immigration squarely under national power, with the Supremacy Clause serving as the clear barrier against state interference. Federalism never meant states could carve out exemptions from uniform federal law on matters of sovereignty and security. Original understanding leaves no room for sanctuary regimes that treat federal statutes as optional suggestions. Judges who prioritize local politics over that structure, even those nominated by conservatives, only prolong the crisis at the southern border.