Since the 20th century, global war on drugs which focus on prohibit and punitive measures has been shown to be failed. Many studies have shown that enforcement can not stop the global illicit drug market. So the international community began to adopt a tolerant policy on the drug consumers, especially marijuana users. Many countries agree that the real source of social chaos are those violent crime from illegal drug trafficking which process by the drug cartels. Simply holding and consuming drugs cause very low damage to others, therefore decrimtinalization on drugs consumption exists its own rationality.
Social and cultural factors, the concept of criminal policy, and the background of its drug problems all deeply influence every countries when they need to develop drug policies. Because of its leadership position, United States of America ''s drug policy has certain influence to Latin American countries. When it comes to discuss the international treatments on drug users, European countries are the most representative, due to its more mature development of drug-related laws and regulations, especially Dutch’s liberal drug policy, should be the most famous one in the world. The reduce supply-oriented drug policy has been realized in Latin America more than 50 years, but such drug policy has been proved to be ineffective in the recent 10 years. Therefore, Latinamerican countries have also started to discuss a different policy on drugs, which is the decriminalization, hoping to solve the drug problems which have troubled Latin America for a long time..
Mexico is the most directly affected by the negative impact caused by the global war on drugs, the drug problem seriously affecting Mexico''s social, economic and political dimensions. Mexican drug cartels fortuned in the 1960s when United States started to increase demand on drugs. Under drug cartel’s control, Mexico has suffered from suerious drug problems. Since 2006 Mexican drug war has launched, the worsening of public security and the corruption problems, make government at a loss, and people are still living in misery. Faced the failure on global drug war, the decriminalization of drug consumption also affect Mexico. In 2009 Mexico decriminalize personal comsumption on drugs, but the law still has lots of controversy. And by the influence of lots of countries are realizing legalization of marijuana for recreational use, D.F. the capital of Mexico, also started a lively discussions about the legalization of marihuana in 2013. Hoping to find a new way out of the ineffective situation of combat drug problems in Mexico.