A central Pennsylvania county’s policy barring people on probation from using medical marijuana violates state law and must be struck down, an attorney for the American Civil Liberties Union told the Pennsylvania Supreme Court during its first-ever livestreamed argument session.

The justices on Tuesday heard arguments in the case, captioned Gass v. 52nd Judicial District, Lebanon County, in which the high court exercised its plenary, or King’s Bench, jurisdiction. The case asked the Pennsylvania Supreme Court to address whether probation departments may bar probationers from using medical marijuana, which is legal in Pennsylvania.