State and Local Restrictions on Employing, Renting Property to, or Providing Services for Unauthorized Aliens: Legal Issues and Recent Judicial Developments [December 20, 2010] [open pdf - 312KB]
"An estimated 37 million foreign-born persons currently reside in the United States, almost a third of whom may be present without legal authorization. The reaction of state and local jurisdictions to unauthorized immigration has varied. In some cases, states and localities have adopted measures intended to deter unlawfully present aliens from arriving and settling within their jurisdictions, including by restricting such aliens' access to work, housing, and benefits. Typically, such measures have sought to (1) limit the hiring and employment of unauthorized aliens, including through the denial of permits to persons that employ unauthorized aliens and the regulation of day labor centers; (2) restrict the ability of unlawfully present aliens to rent or occupy dwellings within the state or locality; and/or (3) deny unlawfully present aliens access to state or local services or benefits."
CRS Report for Congress, RL34345