Guest Blog by: Robert Chao Romero On April 25, the United States Supreme Court ruled on the constitutionality of Arizona’s controversial SB-1070 law.   This mean-spirited anti-immigrant legislation allows state law enforcement officials to check the immigration status of individuals as part of a lawful arrest, stop, or detention if they have “reasonable suspicion” the individual is undocumented.  It also permits the warrantless arrest of individuals that police believe have committed deportable offenses.   From an objective legal perspective, this law should be struck down based upon clear U.S. Supreme Court precedent.  According to the 1976 U.S. Supreme Court case of De Canas v. Bica, “[p]ower to regulate immigration is unquestionably exclusively a federal power.This important case stands for a simple, and uncontested, legal principle:  it is the job of the federal government to regulate immigration.   States and local governments do not have this authority.  Only the federal government can create laws and policies which determine who gets to stay in this country and who can be forced to leave.  Only the federal government has the authority to check the immigration status of individuals and make decisions about visas, asylum, deportation, etc. With limited exception, states and local governments cross the line into unconstitutional territory every time they try to engage in these types of activities.  One basic exception to this rule is that Immigration and Customs Enforcement (ICE) is allowed to enter into special agreements with local law enforcement agencies which authorize them to enforce immigration laws.   According to these “287(g)” agreements, ICE provides basic training to local police and then delegates to them some of its authority to regulate immigration.  Outside of these special agreements it is illegal for states and cities to engage in the regulation of immigration.   This is the current state of immigration law and it is uncontested.  It is really that simple. SB 1070 and its modified version, House Bill 2162, blatantly violate this clear Supreme Court precedent because they take the regulation of immigration out of the hands of the federal government and place it unconstitutionally in the hands of Arizona state authorities.  These laws basically say, “we the state of Arizona, by our own prerogative, authorize all of our police officers to regulate immigration by checking peoples’ immigration status.”   Again, this is not contested legal territory.  Regulation of immigration is entirely a federal prerogative.  My UCLA undergraduate students could tell you that. The United States Supreme Court had a clear choice to make on April 25:  Will it follow its own clearly-established precedent and strike down SB-1070?   Or, will it follow the path of conservative judicial activism by upholding the law?

Robert Chao Romero is an Assistant Professor in the UCLA César E. Chávez Department of Chicana/o Studies. He received his J.D. from U.C. Berkeley and his Ph.D. in Latin American History from UCLA.  He is the author of The Chinese in Mexico, 1882-1940 and various articles related to race in Latin America and the United States.  Together with his wife, Erica Shepler Romero, he is the co-founder of Christian Students of Conscience. Please note that the views expressed do not necessarily represent those of everyone associated with G92 or any institutions with which the blogger may be affiliated.  If you’re interested in writing a guest blog, contact      

One Response to A Legal Analysis of Arizona SB-1070

  1. Jamilly says:

    about overburdening state poicle will be the end result. Even if they DO have a law to apprehend the illegals, they cannot deport them. Thats federal juristiction and so if the feds don’t want them to go, they can let them stay. Sometimes its cheaper and easier to give a green card than to do the legal hasstle of deportation- Especially if they have children born here.Every illegal allowed to stay will be a strain on the state forces, and a waste of time for the feds who would have to just let them go. There is a positive end to this though. A lot of illegals will get their green cards and be no longer breaking the law. I am sure this is the intended consequence you want, right AZ, Honcho?

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