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The Center for Immigration Studies and NumbersUSA, another group that wants to slow immigration, pegged Romney early as one of the most consistent GOP candidates on the issue. "Everything is about attrition through enforcement with him," NumbersUSA President Roy Beck said in December.

Krikorian said his 2005 attrition-through-enforcement paper crystallized the various solutions that immigration hawks had been touting for years into a single phrase. "When I came up with the term, it was somehow 'revolutionary.' But it was inherent in everything that the pro-enforcement people have been saying all along. It's just that we needed a label." Romney has now made the label famous.

By Fawn Johnson -- National Journal

Interior Enforcement
Illegal Immigration
Attrition through Enforcement