Kentucky Gov. Matt Bevin has countersued 16 of his residents who are challenging the state’s newly approved Medicaid work requirements in a federal class-action lawsuit in Washington, D.C.

In a lawsuit filed Monday in federal court in Frankfort, Kentucky, Bevin asks the court to find that Kentucky HEALTH, the state’s Medicaid waiver program, does not violate the Social Security and Administrative Procedure acts, or the U.S. Constitution.