A federal appeals court in Virginia is set to hear arguments on the constitutionality of President Barack Obama’s health care overhaul.

A three-judge panel of the 4th U.S. Circuit Court of Appeals in Richmond will hear two cases involving the legislation Tuesday.

In one, the federal government is appealing U.S. District Judge Henry Hudson’s ruling striking down the law’s requirement that individuals buy health insurance or pay a penalty.

In the other case, Liberty University is appealing U.S. District Judge Norman Moon’s ruling that the insurance mandate is a proper exercise of congressional authority under the Commerce Clause.

The two Virginia lawsuits are among 31 that have been filed seeking to invalidate the law but are the first to be heard by a federal appeals court.