"United States. Bureau of Customs and Border Protection" . . "United States. Bureau of Customs and Border Protection." . "United States." . . . . "Visas." . . "Visas United States." . . "Illegal aliens." . . "United States. Congress. House. Committee on Homeland Security. Subcommittee on Border and Maritime Security," . . "Aliens United States Identification." . . "Aliens Identification." . . "Illegal aliens United States." . . "Immigration enforcement United States." . . . . . . . . . . . . . . . . . . . . "Legislative hearings"@en . . . . . "Legislative materials"@en . . "Visa security and overstays : how secure is America? : hearing before the Subcommittee on Border and Maritime Security of the Committee on Homeland Security, House of Representatives, One Hundred Thirteenth Congress, first session, May 21, 2013"@en . "Rules"@en . . . . . . . . . . . . "Immigration enforcement." . . "National security." . . "National security United States." . .