The Associated Press is reporting that foes of a DC gay marriage law set to take effect Wednesday are asking the Supreme Court to halt its start.

The challenge was filed with Chief Justice John Roberts on Monday. Opponents say the law should be put up for a vote.

The government of DC approved the law in December, but has been defending gay marriage since it approved a law last spring that recognizes the marriages of gay and lesbian couples from other states.

A last-minute appeal to the District of Columbia Appeals Court, which was rejected Friday, left opponents with few legal options to head off the law from going into effect.

The Supreme Court has already agreed to hear two cases that involve gay rights.