The grey market epitomized by Uber v. taxis, Air B&B v. Hilton and Amazon v. Macys.
FDA regulations of E-cigs.
Death from painkillers down 25% in legal marijuana states
Attorney General Jeff Sessions making noises about enhanced drug enforcement and disparaging comments about marijuana.
Justin Amash R-MI, Tom Garrett R-VA, Ed Blumenauer D-OR, Tulsi Gabbard D-HI, Scott Taylor R-VA & Don Young R-AK co-sponsoring "Ending Federal Marijuana Prohibition Act of 2017.
Connecticut bill to tax pensions of state employees who have left state. Privileges and immunities clause?