Two same-sex couples have filed a federal lawsuit challenging Texas' ban on gay marriage.

Cleopatra de Leon and Nicole Dimetman of Austin married in Massachusetts but a constitutional amendment approved by voters in 2005 prohibits Texas from recognizing their marriage. The law also prevents San Antonio couple Victor Holmes and Mark Phariss from marrying. The couple was denied a marriage license last month.

The plaintiffs are represented by attorney Daniel McNeel Lane.

“Just as the judicial branch protected the fundamental right to marry and establish that discriminatory laws could not prevent mixed-race couples from exercising that right, the courts again must step in to protect the marriage right,” Lane is quoted as saying by Reuters.

The suit is among the nearly two dozen filed throughout the nation following a June ruling from the U.S. Supreme Court striking down a key portion of the Defense of Marriage Act (DOMA) which prohibited the federal government from recognizing the legal marriages of gay and lesbian couples. Most of the cases have been filed in federal courts in hopes of reaching the Supreme Court.

Jonathan Saenz, president of the Christian conservative group Texas Values, described the lawsuit as “frivolous” in comments to AFA's One News Now.

“Do laws mean anything to the homosexual advocates?” Saenz rhetorically asked. “It's gotten to this point to where the only way they win is people don't enforce the law. That kind of mob rule will not work, and it's something that will be a disaster for our state and our country.”

“This is the definition of a frivolous lawsuit,” he added.