Because the United States is the largest drug seller in Mexico, and the relationship between the two countries is close, most Mexican drugs are shipped to the United States for sale, so it can be said that Mexican drugs are so rampant because of American connivance.

Geographically, there is only a wall between the United States and Mexico. It is very easy to transport drugs from Mexico to the United States, saving time and effort. Not only the transportation cost is low, but also a continuous drug trafficking route is formed, which is very beneficial to Mexican drug dealers, and the United States is relatively lenient with the transported drugs, so Mexican drugs are a big industry in the United States. So close, that's why Mexico chose to sell drugs to the American market.

Moreover, the United States makes a living by selling weapons, and selling arms is its pillar industry. Mexican drug dealers have to buy American arms if they want to compete with each other or confront the government, so the two countries have formed a trading chain. If the United States prohibits Mexican drugs from entering the country, then the United States will lose Mexico, the arms sales market, Mexico will lose the American drug market, and the drug trafficking industry will also be hit. Therefore, in order to develop its own arms industry, Mexico will inevitably be sucked down.

Finally, it is legal to smoke marijuana in many States in the United States. The United States knows that the drugs consumed nationwide account for 60% of the world. Many interest groups in the United States colluded to legalize drugs. For example, many people are addicted to the drugs prescribed by doctors. The reason why doctors are so bold is because there are interest groups behind them. If the United States does not change this situation, Mexican drug dealers will continue to be rampant.