- "The requirement that police officers investigate the immigration status of all individuals they stop if the officers suspect that they are in the country unlawfully;
- The mandatory detention of individuals who are arrested, even for minor offenses that would normally result in a ticket, if they cannot verify that they are authorized to be in the U.S.;
- State criminal penalties for non-citizens failing to register or failing to carry registration documents;
- The provision authorizing warrantless arrest of individuals who are deemed by state or local police officers to be "removable" from the U.S.; and
- State criminal penalties for alleged unauthorized workers." http://www.aclu.org/immigrants-rights-racial-justice/frequently-asked-questions-update-legal-challenges-arizonas-racial-
Right now (March of 2011), things are stalled while the lawsuits are carried out.