Truth is, after America had the heroic liberation wars in Iraq and Afghanistan, the market changed from Colombia to Mexico, because of effort of Bill Clinton and the President of Colombia, Andrés Pastrana Arango, they started a plan to stop and combat the Colombian drug cartels and left-wing insurgents groups in Colombian territory by direct military intervention by American troops. America has spent Nine point three billions of dollars in this foreign intervention, making it the most expensive military aid movement after taking action in the Middle East. It was planned in 1988 and 1989 and it has worked! It has reinforced security in Colombia but only to pass on the power of supplying to America to Mexico's drug cartels. Reinforcing and empowering the abuses of human rights by the Mexican drug cartels in order to compete with other countries to fulfill the psychotic domestic need of America for drugs. It is actually pretty simple, if one pushes something down; at some time something else has to rise up. .
Taking into consideration that America did criminalize drugs that in other countries they haven't even heard of because of the Treaty of Versailles in 1920's which was to end the First World War. One of many of America's conditions or clauses to actually sign the treaty was to make the rest of the world, (or at least the countries involved in the First World War) sign to impose and adopt drug prohibition in their law enforcement (Nadelmann). The Criminalization of drugs that America has resent on other countries has been a major factor to influence today's position of the world towards drugs. Think about Tobacco for example, cigarette consumption is legal in America yet because there is a concern in the health institutions more than half of the consumers of cigarettes can and also have successfully overcome their addiction (Nadelmann). No one is fighting over who brings tobacco to America.