- Since 1940, it has been a federal crime for aliens to fail to keep registration documents with them. The Arizona law simply adds a state penalty to what was already a federal crime
- The law prohibits racial profiling. Section 2 [of the new law] provides that a law enforcement official “may not solely consider race, color or national origin” in making any stops or determining immigration status.
- Reasonable suspicion does not give police the power to arbitrarily check anyone's papers. Federal legal precedents define and list the factors that contribute to "reasonable