In Perversions of Justice ( 2002 ) , Churchill argues that the U.S. ' s legal system was adapted to gain control over Native American people . Tracing the evolution of federal Indian law , Churchill argues that the principles set forth were not only applied to non @-@ Indians in the U.S. , but later adapted for application abroad . He concludes that this demonstrates the development of the U.S. ' s " imperial logic , " which depends on a " corrupt form of legalism " to establish colonial control and empire .