US authorities arrested the wife of jailed Mexican drug lord Joaquin "El Chapo" Guzman on Monday at an airport outside of Washington on narcotics smuggling charges, the Justice Department said. Emma Coronel Aispuro, 31, faces one charge of conspiracy to traffic cocaine, methamphetamine, heroin and marijuana for importation into the United States, the department said. Guzman was the leader of the Sinaloa Cartel, one of Mexico's most notorious drug trafficking groups. He ran an operation that delivered hundreds of tons of narcotics into the United States and was behind multiple murders of those who crossed him, according to court filings. He was extradited to the United States in 2017 to stand trial, and was convicted and sentenced to life in prison two years later.