Gays have as much right to marry as interracial couples. That’s the essence of the argument from Attorney General Mark Herring (pictured) in the same-sex marriage case. Herring filed a document Friday in the Richmond-based 4th U.S. Circuit Court of Appeals. He supports the effort of some gay couples who filed the lawsuit. Herring says the judge who struck down the Virginia ban earlier this year was correct in citing a U.S. Supreme Court ruling that invalidated state laws prohibiting interracial marriage. Herring says the U.S. Constitution equal protection clause protects the fundamental right to marry, and trumps any state authority to decide the matter. Arguments are set for May 13th.