2020 Census: The Bureau Concluded Field Work but Uncertainty About Data Quality, Accuracy, and Protection Remains, a Report to Congressional Requesters [open pdf - 491KB]
"'The Census Bureau has completed data collection operations for the 2020 Decennial Census. As the Bureau begins processing responses to deliver data for apportionment and redistricting, it will need to ensure the quality, accuracy, and protection of the data collected. In recent years, GAO [Government Accountability Office] has identified challenges to the Bureau's ability to conduct a cost-effective count of the nation, including new innovations, acquisition and development of IT systems, and other challenges. In 2017, these challenges led GAO to place the 2020 Census on its High-Risk List. Since 2007, GAO has made 113 recommendations specific to the 2020 Census. As of December 2020, 20 of the recommendations had not been fully implemented.' GAO was asked to provide regular updates on the 2020 Census. This report examines the cost and progress of key 2020 Census operations critical to a cost-effective enumeration, and early warnings that may require Census Bureau or congressional attention."
Government Accountability Office: http://www.gao.gov/