This chapter concerns Mexico. As with many countries, corruption there is deeply entrenched. Under the Institutional Revolutionary Party (PRI), corruption may have contributed to political stability by allowing government officials to enjoy the spoils. More recently, despite a gradual shift away from one-party PRI authoritarianism, corruption in Mexico has increased. The decline in the PRI’s influence enhanced the power of state officials, with an associated splurge in local corruption. The shift involves new, and more corrupt, relations between firms and the state. Even democratization does not immunize a country from corruption, and Mexico’s efforts to stem corruption have been half-hearted at best. One of the most serious consequences has been a horrific increase in deaths related to drug trafficking and associated gang activity. Another victim has been public confidence in the Mexican state.