and characters have made reference to all superpowered individuals being forced to register and enlist in S.H.I.E.L.D. It was revealed in Amazing Spider-Man #535 that unregistered individuals are sent to a prison in the otherdimensional Negative Zone indefinitely until they agree to register. Iron Man claims that as this is off United States soil, they have almost no civil rights unless the United States Supreme Court explicitly rules otherwise—and he knows they won't. This leads Spider-Man to re-evaluate his support of the act. After the major conflict of Civil War ends, all the superhero inmates are transferred to real prisons in the state while the facility is transformed into a Maximum Security Prison for high-threat-level villains such as the Taskmaster and Lady Deathstrike. Marvel Universe Marvel Comics Mutant Control Act The first direct mention of a piece of legislation specifically aimed at super-humans in the Marvel Universe comes in Uncanny X-Men #141 (January 1981), in which the "Mutant Control Act", a law from the future, is mentioned. In this issue (the first part of the two-part "Days of Future Past" storyline), the consciousness of Kate Pryde travels back in time from a dystopian future to the present, possessing the body of her younger self, X-Men member Kitty Pryde. Upon revealing herself to Kitty's teammates, she recounts to them the series of events which led to her dark present/their future, in the hopes the X-Men can prevent these historical events from ever happening. One of those pivotal events was the passing of a "Mutant Control Act" by the U.S. government. When the U.S. Supreme Court strikes down the law for being unconstitutional, the other branches of the government respond by reactivating the Sentinel program, and its mutant-hunting robots, to police mutants. However, this plan backfires when the artificial intelligence-enabled Sentinels determine that the best way to stop mutants is to control all people (since any non-mutant, at any level of society, could eventually become a politically powerful mutant ally advancing pro-mutant ideas and laws); the Sentinels forcibly take over the U.S. government and institute a harsh regime which includes severe mutant persecution. The reference to the Mutant Control Act is brief, and it is unclear exactly what its provisions would entail, though it would appear that registration forms at least one part of it. In the course of the story, the X-Men successfully prevent one of the pivotal events Pryde had