Medical marijuana advocates will descend on Capitol Hill Tuesday.

The advocates are in town for the National Medical Cannabis Unity Conference, which culminates in a lobbying day next week.

Currently, federal law prohibits any use of marijuana, including for medical purposes. But some states have lifted these restrictions within their own borders.

This has created a conflict between the federal and state governments over marijuana enforcement.

Click here to read the complete article

Tim Devaney ~ TheHill.com ~