Article by Kevin Maimann, Metro News Two advocacy groups are at odds over whether blood testing should be done on motorists who are impaired by marijuana. While MADD Canada supports the federal proposal to measure the amount of THC in a driver’s bloodstream, Smart Approaches to Marijuana (SAM) Canada has written to the federal government in … Continue reading Blood Feud: Advocacy Groups At Odds Over How To Test Impaired Drivers For Marijuana