The National Rifle Association on Tuesday asked the U.S. Supreme Court to consider its suit against former New York Department of Financial Services superintendent Maria Vullo, whom the gun-rights advocacy group accused of threatening insurers because they did business with the NRA.

A three-judge panel of the U.S. Court of Appeals for the Second Circuit ruled in Vullo’s favor in September, finding that she “was merely carrying out her regulatory responsibilities” when she investigated insurance companies that had partnered with the NRA. The appellate court denied the NRA’s request for rehearing en banc in November.