The Support Our Law Enforcement and Safe Neighborhoods Act (introduced as Arizona Senate Bill 1070 and thus often referred to simply as Arizona SB 1070) is a legislative Act in the U.S. state of Arizona that at the time of passage was the broadest and strictest anti-illegal immigration measure in recent U.S. history. It has received national and international attention and has spurred considerable controversy. U.S. federal law requires all aliens over the age of 14 who remain in the United States for longer than 30 days to register with the U.S. government, and to have registration documents in their possession at all times; violation of this requirement is a federal misdemeanor crime. The Arizona Act additionally made it a state misdemeanor crime for an alien to be in Arizona without carrying the required documents, required that state law enforcement officers attempt to determine an individual's immigration status during a "lawful stop, detention or arrest", or during a "lawful contact" not specific to any activity when there is reasonable suspicion that the individual is an illegal immigrant. The law barred state or local officials or agencies from restricting enforcement of federal immigration laws, and imposed penalties on those sheltering, hiring and transporting unregistered aliens. The paragraph on intent in the legislation says it embodies an "attrition through enforcement" doctrine.
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