Privacy Act of 1974: Implementation of Exemptions; Department of Homeland Security/U.S. Customs and Border Protection-007 Border Crossing Information System of Records [open pdf - 199KB]
From the Summary: "The Department of Homeland Security (DHS) is issuing a final rule to extend the exemptions from certain provisions of the Privacy Act to the updated and reissued system of records titled, 'DHS/U.S. Customs and Border Protection (CBP)-007 Border Crossing Information System of Records.' Specifically, the Department exempts portions of the 'DHS/CBP-007 Border Crossing Information System of Records' from one or more provisions of the Privacy Act because of criminal, civil, and administrative enforcement requirements. This final rule is effective March 21, 2016."
Federal Regulations: http://www.regulations.gov/
Federal Register (March 21, 2016), v.81 no.54, p.14947; Docket No. DHS-2016-0016