AIKEN, S.C. (AP) - Rudy Giuliani is promising that if he gets in the White House, he'll cut off the flow of undocumented workers into the U.S.
He told a crowd in South Carolina that his plans include building a database to track visitors in the U.S. and creating uniform ID cards for foreign workers and students.
Rival Mitt Romney went after Giuliani on the issue last week, saying that Giuliani had supported illegal immigration as New York's mayor. Romney called New York a poster child for sanctuary cities.
Giuliani shot back, saying under his rule, New York "had the least amount of illegality per capita of any major city."