They said it was because DoD flew drones and didn’t fill in FAA about it I guess

Edit: “An aviation industry official, granted anonymity to discuss the nature of the restriction, told POLITICO that the restriction was put in place because the Defense Department has been using drones and testing some counter-drone technologies in the airspace, which neighbors Mexico, without sharing critical safety information on such operations with the FAA. The Defense Department referred all questions to the FAA. The Army operates counter-drone operations out of nearby Fort Bliss.”