Title: U.S. Border Patrol's implementation of "Operation Gatekeeper"
Subjects: United States, Government policy, United States. Immigration Border Patrol, Illegal aliens, Operation Gatekeeper (U.S.), Evaluation, Border patrols, U.s. border patrol, United states, emigration and immigration, Mexican-american border region, Noncitizens, Illegal immigration, Undocumented Immigrants, Aliens
Places: Mexican-American Border Region, United States