His calculation was based primarily on government budget reductions associated with not arresting, trying, and incarcerating people for violating the laws.
Meanwhile Mr Soros also said that austerity demanded a new approach to dealing with the drug problem, because incarcerating offenders was too expensive for local government coffers.
Arizona spends several hundred million dollars each year incarcerating criminal aliens and providing education and health care to aliens who entered and reside in the country in violation of federal law.