Sen. Richard Shelby (R-Ala.), however, argued that while civil liberties and states' rights are important, telling DOJ not to enforce federal laws goes against legal principles.
"If Congress wants to tell the Department of Justice to stop enforcing the medical marijuana laws, then it should change the authorization within the Judiciary Committee, not through an appropriations provision," he said.
7/27/17
http://thehill.com/homenews/senate/344204-senate-panel-advances-measure-to-protect-medical-marijuana-states
"Sen. Shelby opposes legalizing marijuana, and would therefore oppose such a provision. However, he has not been approached about including anything related in the Senate's version," said Jonathan Graffeo, spokesman for Mr. Shelby. (Related to Rohrabacher 2014 amendment)
6/2/2014 http://yahoo.com