Secretary of State Tillerson and Homeland Security Secretary Kelly meet their Mexican counterparts on May 18 to discuss the fight against organized crime and drug smuggling. This is a positive sign in a relationship that has been shaken by U.S. criticisms this year. Both countries need good—and better—cooperation against drugs and cartels. The United States is suffering an epidemic of opioid overdoses fueled by the abuse of prescription drugs and heroin and synthetic opioids smuggled from Mexico. Mexico is suffering a surge in homicides fueled in part by the criminal gangs that feed U.S. drug demand and reap billions of dollars in profits.