The fight stems from a lawsuit that the school’s environmental law clinic filed on March 2 on behalf of an environmental group against poultry giant Perdue Farms and a chicken farmer who supplies the company. The lawsuit contends that the defendants are illegally discharging pollution into the Franklin Branch and Pocomoke River, which feed into the Chesapeake Bay.

The move by Maryland legislators is the latest in string of attempts by government officials and others to gain access to information about law school clinics. Law schools have consistently resisted those attempts, arguing that clinics are entitled to the same attorney-client privilege as are law firms and other attorneys.