The Mexican drug cartels are smuggling arms very comfortably. There seems to be no strategy from US to stop it. Though most of the weapons that Mexican drug cartels use are smuggled from the United States, but the U.S. government lacks a cohesive strategy to combat the arms trafficking, according to a Government Accountability Office report to be released Thursday.

In Mexico last year, drug violence was blamed for the deaths of 78 soldiers and more than 6,000 others. This year, the drug violence has claimed more than 2,900 lives, according to the newspaper El Universal.

Much of the violence has affected the U.S.-Mexico border.

Over the last five years, about 87 percent of firearms seized and traced by Mexican authorities were purchased in the United States, a draft of the report says. Most of the weapons were acquired at gun shops and shows in border states, according to the report. Many of these are high-caliber and high-power weapons, including AK-47s and AR-15 semiautomatic rifles.

The two agencies tasked with curbing arms smuggling to Mexico, the Bureau of Alcohol, Tobacco, Firearms and Explosives and Department of Homeland Security, “do not effectively coordinate their efforts, in part because the agencies lack clear roles and responsibilities,” according to the draft.