S. Rept. 116-100: Construction Consensus Procurement Improvement Act of 2019, Report to Accompany S. 1434, Including Cost Estimate of the Congressional Budget Office, September 10, 2019 [open pdf - 421KB]
From the Purpose and Summary: "S. 1434, the Construction Consensus Procurement Improvement Act of 2015, amends the Federal Acquisition Regulation (FAR) to prohibit Federal agencies from the use of reverse auctions for awarding design and construction services."
S. Rept. 116-100; Senate Report 116-100
U.S. Government Publishing Office: http://www.gpo.gov/