Four legally married gay couples on Monday filed a lawsuit seeking to have their marriages recognized by Tennessee.

The suit, filed in federal district court in Nashville, argues that Tennessee's laws prohibiting recognition of the couples' marriages violates the federal constitution's guarantees of equal protection and due process and the constitutionally protected right to travel between and move to other states.

The couples married in states where it is legal before moving to Tennessee.

Dr. Valeria Tanco and Dr. Sophy Jesty moved to Knoxville in 2011.

“Getting married not only enabled us to express our love and commitment to one another, but it also provided us with the protections we would need as we started our new lives together,” Dr. Jesty said in a statement announcing the lawsuit. Tanco is currently pregnant with the couple's first child.

Tennessee prohibits gay couples from marrying by state law and a constitutional amendment which was overwhelmingly approved by voters in 2006.

A U.S. Supreme Court ruling handed down in June led to the federal government recognizing the legal marriages of gay couples, regardless of whether they live in a state that allows such unions or not. The ruling has provoked dozens of lawsuits throughout the nation similar to Monday's filing.