A federal judge on Wednesday will hear arguments in a case challenging Louisiana's ban on gay marriage.

LGBT rights group Forum for Equality Louisiana filed a case in February on behalf of four gay couples who say the state's refusal to recognize their out-of-state marriages violates the U.S. constitutional guarantees of equal protection and due process. The case was consolidated with a similar challenge involving two gay couples.

U.S. District Judge Martin Feldman, who was nominated to the bench by Republican President Ronald Reagan, will hear arguments in the case in New Orleans.

“This is as basic as the Golden Rule,” SaraJane Brady, executive director of Forum for Equality Louisiana, said in an emailed statement. “Treating others as one would want to be treated includes extending all the rights and privileges of marriage to lesbian and gay couples who are truly committed to each other. This lawsuit would uphold this very basic principle of freedom for all Louisianans.”

An overwhelming majority (78%) of voters approved Louisiana's 2004 constitutional amendment which states that marriage “shall consist only of the union of one man and one woman” and prohibits state officials and judges from recognizing the out-of-state marriages of gay couples.

The Louisiana Supreme Court upheld the amendment in 2005.