Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. Mexican President Shuts Down US Official's Criticism of Narco Strategy Reuters MEXICO CITY - Mexico's president Thursday accused a senior U.S. diplomat of lacking respect for Mexican sovereignty after he questioned the Mexican government's strategy for quelling drug cartel violence. President Andres Manuel Lopez Obrador responded to comments by Richard Glenn, the U.S. deputy assistant secretary of State for international narcotics and law enforcement, Wednesday in the U.S. Congress. .