Roberto Lugardo Moreno has been arrested in Texas after admitting to purchasing firearms for a Mexican drug cartel, one of which was linked to the kidnapping of four Americans in Matamoros, Mexico. Moreno has been charged with conspiring to illegally export a firearm and is currently awaiting trial. The U.S. government is working to strengthen border security and crack down on illegal firearms smuggling in order to combat gun trafficking between the U.S. and Mexico.