PIERRE, S.D.(WNAX)- South Dakota legislators are struggling to come up with rules to help guide the implementation of medical marijuana approved by voters last November.

During a subcommittee hearing this week, Senator V.J. Smith of Brookings said there are major outstanding issues with “IM26”.

Smith says its hard to know how much voters knew about the issue when they cast their ballots.

Smith says they haven’t heard any research about the therapeutic qualities of marijuana.

Medical marijuana becomes legal on July first, but the sales of any product probably won’t happen until late fall.