would increase other types of drug use and make the state a magnet for addicts; however, there is no evidence marijuana is a gateway drug. It is argued that as with alcohol, sobriety is the only safe alternative, and existing drug laws should be enforced. Opponents also state that the costs of enforcement are minimal compared to the costs of drug addiction and treatment, as well as the fact that legalization at the state level would not affect federal laws and international treaties concerning marijuana. Some employees of the Drug Enforcement Administration were reported to have been financing opposition to Amendment 44, a move which generated significant controversy. See also Decriminalization of marijuana in the United States Legal history of marijuana in the United States List of Colorado ballot measures References Cannabis ballot measures in the United States Amendment 44 2006 Colorado ballot measures 2000 in cannabis Constitution of Colorado