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1
Homeland Security investigations, a directorate within the U.S. Immigration and Customs Enforcement: in brief [Library of Congress public edition].
Published: Congressional Research Service, 2019Get full textDescription: 1 online resource.
Government Document Website -
2
Immigration : visa security policies [Library of Congress public edition].
Published: Congressional Research Service, 2018Get full textDescription: 1 online resource.
Government Document Website -
3
Border security : the role of the U.S. Border Patrol [Library of Congress public edition].
Published: Congressional Research Service, 2019Get full textDescription: 1 online resource.
Government Document Website