Legalization Share on Facebook Share on Twitter Share on Pinterest Share on LinkedIn Congress passed the Controlled Substances Act in 1970. More than a quarter century later, a section of that law helped states to legalize marijuana. Share on Facebook Share on Twitter Share on Pinterest Share on LinkedIn Articles You May Like How to Get a Medical Marijuana Card in Arkansas Medical marijuana bill in Kentucky jumps huge hurdle with support of Senate leader Hundreds of Kansans get medical marijuana cards in Missouri, as state weighs legalization Pheno Hunting Pot with Phenopredict Genomic Analysis and Weed Scientist Austin Sheppe Using a Heating Box To Store and Infuse Oils How To Make A Salve or Balm Ratios Questions & Answers