Matthews v. Rodgers

Background

A large group of cotton buyers who purchase cotton in Mississippi and sell or ship it out of state sued state officials in a federal court to stop a Mississippi law that imposed a yearly license tax on people who buy or sell cotton and a smaller tax on employers’ buyers. The buyers said the tax unconstitutionally burdened interstate commerce and asked a federal three-judge court to block the state from collecting it. The district court issued an injunction against collection, and the case went to the Supreme Court, which limited reargument to whether the federal court had the proper power to grant that injunction.

Reasoning

The Court addressed whether the federal court should have used its special power to stop the state from collecting the tax. It reaffirmed the long-standing rule that federal courts should not enjoin state tax collection when there is a plain, adequate, and complete remedy at law. Mississippi law allows a taxpayer to pay the tax under protest and then sue the tax collector to recover it. The Court found that remedy adequate here. The Court also rejected the argument that a single equity suit was needed to avoid many separate cases, explaining each buyer’s situation and burden on interstate commerce would raise different factual and legal questions for each plaintiff.

Real world impact

The decision undoes the federal injunction and requires taxpayers challenging state taxes to use payment-under-protest and lawsuits to recover taxes rather than seeking an equitable injunction in federal court. The Court did not decide whether the tax itself is lawful on the merits; it decided only that the federal equity route was not available in this case.