A new medical marijuana bill could set precedent.

Oregon Representative Earl Blumenauer (D) has co-sponsored a bill with Colorado Rep. Jared Polis (D) that would legalize medical marijuana at the federal level.

Blumenauer says his bill would relieve the Department of Justice from prosecuting under a confusing set of laws and would also set up a potential framework for the federal government to tax the drug.

While experts on Capitol Hill don't expect the bill to pass, four other states are facing referendums that would at least legalize medical use of the drug including New York, New Hampshire, Illinois and Maryland.