Federal prosecutors pursuing drug charges against Montana medical marijuana operators want to keep jurors from hearing any evidence about whether the operators were complying with the state's medical pot law.

U.S. Department of Justice attorneys have asked judges in at least two cases to forbid any evidence at trial about medical marijuana or related issues involving state and federal laws.

Attorneys for a Miles City family of medical marijuana operators plan to fight the prosecutors' attempt to keep the jury from hearing about medical marijuana issues.

Billings attorney Brad Arndorfer says that Richard Flor, his wife Sherry and son Justin followed state law.

The Flors are expected to plead not guilty Wednesday to new charges of manufacture and distribution of marijuana, plus money laundering, weapons and conspiracy charges.

Associated Press