The United States Supreme Court today refused to hear an appeal from opponents of marriage equality aiming to overturn the District of Columbia’s same-sex marriage law.

It was at least the second time in the last year that opponents have tried to overturn the Religious Freedom & Civil Marriage Equality Amendment Act through the Supreme Court. A similar challenge also failed in 2010.

The most recent challenge stems from a lawsuit filed by Bishop Harry Jackson against the Washington D.C. Board of Elections & Ethics after the board refused to put the question of same-sex unions before the district’s voters. The board said that such an initiative would permit discrimination.

D.C. gay marriage law survives legal challenge

According to the Associated Press, the court did not issue a statement on its decision.

In 2009, then D.C. mayor Adrian Fenty signed the measure recognizing same-sex marriage.