Southwest Border Security: CBP is Evaluating Designs and Locations for Border Barriers but is Proceeding Without Key Information, Report to Congressional Requesters [open pdf - 4MB]
"In January 2017, the President issued Executive Order 13767, which directs the Secretary of Homeland Security to immediately plan, design, and construct a wall or other physical barriers along the southwest border. CBP's fiscal year 2018 appropriation provided funding for barrier planning and design, but limited use of funds for primary barrier construction to previously deployed fencing designs. GAO [Government Accountability Office] was asked to review DHS's efforts to deploy barriers along the southwest border. This report examines (1) how CBP [U.S. Customs and Border Protection] evaluated potential designs for barriers, (2) DHS's process for identifying and assessing locations for future deployments of barriers, and (3) how DHS is managing the acquisition of the Border Wall System Program, among other things. GAO analyzed planning documents; interviewed DHS, CBP, and Border Patrol officials; and conducted a site visit to San Diego to observe CBP's testing of barrier prototypes. This is a public version of a sensitive report that GAO issued in June 2018. Information that DHS deemed sensitive has been omitted."
Government Accountability Office: http://www.gao.gov/