WASHINGTON – The Supreme Court on Monday declined to hear an appeal from a national anti-gay marriage group that tried to thwart Maine's campaign disclosure law requiring it to release its donor list.

The high court turned aside an appeal from the National Organization for Marriage, which donated $1.9 million to a political action committee that helped repeal Maine's same-sex marriage law.

Maine's campaign disclosure law requires groups that raise or spend more than $5,000 to influence elections to register and disclose donors. NOM contends that releasing the donor list would stymie free speech and subject donors to harassment, but the lower court refused to throw out the law.