Women have been members of cartels and gangs. Many countries have competition laws that prohibit monopolies and cartels. Gangs play a major role in the activity of drug cartels. There have been female combatants in the military, police, cartels, and gangs. Expanding on the prior success of MAS, the cartels and independent traffickers would meet again. In these positions, Bashant prosecuted crimes involving Mexican drug cartels and methamphetamine labs. Improvised armoured vehicles used by Mexican drug cartels, notably Los Zetas. These confrontations were primarily between cartels and government institutions. It was the largest U.S. raid ever against Mexican drug cartels operating in the U.S. Mexican officials denied any corruption in the government's treatment of drug cartels. Bars and casinos are often the hubs for money laundering of the drug cartels. There are other operating groups within the drug cartels. But since 2008 it has experienced violence related to turf battles between warring drug cartels. It's worth noting that there are other operating groups within the drug cartels. The Mexican drug cartels have as many as 100,000 members.