The United States has imposed sanctions on Joaquin Guzman Lopez, the son of Mexican drug kingpin Joaquin “El Chapo” Guzman, who is currently serving a life sentence in a U.S. prison. Guzman Lopez is accused of overseeing drug trafficking into the U.S. through “super labs.” His brothers have also been charged with running a fentanyl trafficking operation fueled by Chinese chemical and pharmaceutical companies. Mexican President Andres Manuel Lopez Obrador has denied the presence of fentanyl labs in the country, alleging it comes from China. The sanctions were coordinated closely with the Mexican government.