“Understanding the rights and powers that states have to act in a policy area is called preemption; this allows or denies states the power to control undocumented immigrants, particularly those at the Mexican border” (Lenz and Holman, 2013). States can create and enforce their own laws and regulations to try to control immigration issues as long as they are considered constitutional. by the federal government. This became the main issue with Arizona's immigration control bill SB1070, a bill that many other states have also tried to implement. “SB1070 is a far-reaching measure aimed at giving the state more power to enforce immigration” (Gilles, Grado, 2016). The bill was designed to grant officers and law enforcement officers the right to check documentation during routine traffic checks and when they deemed it an appropriate situation, while the Supreme Court ruled the bill in to some extent declaring it unconstitutional, the bill itself is still intact and in effect. Local and state officials and law enforcement, including border control, are all designed to do their part in policing the borders and checking documentation to ensure that all immigrants are documented and do not enter the territory illegally of the United States nothing that could be as harmful as