Michigan v. United States

Background

The dispute involves the United States, which sued to enforce an estate tax lien on real property, and the City of Detroit, the County of Wayne, and the State of Michigan, which claimed later city, county, and state tax liens on the same property. The local governments argued their statutes make their tax liens "first lien, prior, superior, and paramount" even over the federal lien. The case was considered alongside another similar matter involving a federal tax lien.

Reasoning

The key question was whether state or local tax liens that arise after a federal estate tax lien can cut ahead of that federal lien. The Court explained that Congress creates the federal tax lien under its power to tax and that federal law is supreme over contrary state laws. Because a lien is attached to the property and passes with it, a federal tax lien established and attached before state interests cannot be displaced by later state or local liens without Congress’s consent. The Court relied on the Constitution’s supremacy and earlier cases to reach this outcome and affirmed the lower court’s ruling.

Real world impact

The decision means that when a federal estate tax lien has attached first, later state and local tax claims on the same property generally cannot take priority. That affects estate administrators, property buyers, and local tax collectors, who must account for federal liens before relying on later municipal or state tax claims. This ruling affirms federal priority in such situations and leaves questions about previously perfected state liens for other cases.