AZ SB-1070: Immigration Enforcement Act (SB 1070)

Arizona's 2010 immigration enforcement law, partially upheld by the Supreme Court. Requires law enforcement to verify immigration status during lawful stops when reasonable suspicion exists.

Why this matters

SB 1070 established Arizona as a national flashpoint for state-federal immigration enforcement tensions. Its "show me your papers" provision remains in effect and shapes how Maricopa County law enforcement interacts with federal immigration authorities today.