The Michigan House plans a hearing Thursday on proposals that supporters say would clarify the state's voter-approved law allowing the use of marijuana for medical purposes.
The House Judiciary Committee hearing is likely will be the first of several on the legislation.
One proposal aims to better define the type of doctor-patient relationship that would be needed before medical marijuana use could be certified. Another bill would detail requirements for photographs to be included on identification cards that people certified to use medical marijuana must carry.
Republican Attorney General Bill Schuette and some state lawmakers say changes are needed to the 2008 law. Schuette has said the law has "more holes than Swiss cheese."
Medical marijuana advocates say the proposed changes might make the drug harder to get.