Colorado voters pass Amendment 20 legalizing medical marijuana in Colorado. Effective December 28, 2000. Any chronic or debilitating disease or medical condition may qualify. There is no age limit for patients. Amendment allows non-medically trained ̶... read more

Deputy U.S. Attorney General, David W. Ogden, issues a memorandum, “Investigations and Prosecutions in States Authorizing the Medical Use of Marijuana,” to selected U.S. Attorney. This memorandum states that federal investigative and prosecuto... read more

Denver City Council regulates medical marijuana dispensaries by adding Article XI, Medical Marijuana Dispensaries to Chapter 24, Health and Sanitation, of the Denver Revised Municipal Code.  Requires local licensing to operate a medical marijuana dispens... read more

The Colorado General Assembly regulates medical marijuana by passing HB 10-1284.  The bill contains the Colorado Medical Marijuana Code, Title 12, C.R.S. Article 43.3, as well as amends the Medical Marijuana Program, Title 25, Article 1.5, Powers and Dut... read more

Deputy Attorney General James M. Coles issues a memorandum “Guidance Regarding the Ogden Memo in Jurisdictions Seeking to Authorize Marijuana for Medical Use” to U.S. Attorneys. It states that the “Ogden Memorandum” was never inten... read more

Colorado U.S. Attorney John Walsh begins sending cease and desist letters to dozens of medical marijuana dispensaries for being located within 1,000 feet of schools. The letters give the businesses 45 days to comply and end operations.