Immigration policy.

@article{Tanton1975ImmigrationP,
  title={Immigration policy.},
  author={J. Tanton},
  journal={Science},
  year={1975},
  volume={187 4178},
  pages={
          702-3
        }
}
"The Obama administration [has just] announced a policy change that—if it works—should lead to smarter enforcement of the immigration laws, with greater effort spent on deporting dangerous felons and less on minor offenders who pose no threat. The new policy places stricter conditions on when Immigration and Customs Enforcement sends requests, known as detainers, to local law-enforcement agencies asking them to hold suspected immigration violators in jail until the government can pick them up… Expand
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