New Jersey’s Attorney General has filed suit to determine the link between casino magnate Sheldon Adelson and the US Department of Justice’s new opinion on the scope of the Wire Act.

On Tuesday, NJ AG Gurbir Grewal filed suit accusing the DOJ of illegally refusing the state’s Freedom of Information Act (FOIA) requests, which were submitted in February. Grewal (pictured right) seeks to clarify Adelson’s role in the DOJ’s issuance of a new opinion that dramatically expanded the scope of the 1961 Wire Act, which prohibits the transmission of illegal sports betting information across state lines.

Adelson (pictured left), the boss of casino operator Las Vegas Sands, is a fierce opponent of all things online gambling, which Grewal’s lawsuit notes has become “an important part of New Jersey’s economy” since the 2013 launch of the state’s online market. Grewal says New Jersey residents deserve to know “whether this federal crackdown is the result of a lobbying campaign by a single individual seeking to protect his personal business interests.”

Adelson has bankrolled the reliably hyperbolic Coalition to Stop Internet Gambling (CSIG), whose public representatives include former law enforcement officials and Washington pols, including former Senator Blanche Lincoln.