evidence: The U.S. requires that male citizens and male immigrants between ages 18 and 25 register with the federal Selective Service System, the agency responsible for running a draft. It would require an act of Congress to reinstate a draft in the event of a national emergency, and if that were to happen, the Selective Service System would begin calling registered men for duty. "If Congress were to reinstate the draft, the Selective Service would activate and order all personnel to report for duty to open Area Offices," USA Today reported. "A public, televised and nationally streamed National Draft Lottery to establish the order by year of birth in which registrants receive directives to report for induction would follow."