(Providence, RI)--A bill concerning Rhode Island's medical marijuana dispensaries is being amended.The amendment, filed by House Speaker Nicholas Mattiello and Senate President Dominick Ruggerio, narrows the focus to removing the General Assembly from having the final say on marijuana regulations, keeping a proposed rule to have six new planned dispensaries be retail-only.Mattiello and Ruggerio have previously objected to that proposal.But last week, cannabis cultivators testified that allowing the new dispensaries to grow their own weed would put them out of business.Companion bills are scheduled for a vote today.