AdvertisementGovernment Can Waive Environmental Laws To Build Border Wall Prototypes, Court RulesFebruary 12, 2019Matthew S. SchwartzfacebookEmailU.S. Department of Homeland Security Secretary Kirstjen Nielsen speaks in front of a newly fortified border wall structure in Calexico, Calif. in October. A federal court ruled Monday that DHS has broad authority to waive environmental regulations in the name of border security. (AP)