The US Chamber of Commerce has now joined the lawsuit attempting to stop Arizona's new employer sanctions law. In addition to Arizona Employers for Immigration Reform and the Arizona Contractors Association, other groups supporting this lawsuit include:

Arizona Chamber of Commerce and Industry; Wake Up Arizona! Inc., which includes former Phoenix Suns CEO Jerry Colangelo; Arizona Hispanic Chamber of Commerce; Arizona Farm Bureau Federation; Arizona Restaurant and Hospitality Association; Associated Minority Contractors of America, based in state; Arizona Roofing Contractors Association; National Roofing Contractors Association, based in Illinois; and the Arizona Landscape Contractors Association.

Gov. Napolitano (D) says that this new law is constitutional and the press secretary for the AZ attorney general says that they will defend this law "aggressively."