Wide-ranging assessments of 2010 Census operations have recently been published by the U.S. Government Accountability Office and by the U.S. Commerce Department’s inspector general.
Both agencies have undertaken real-time evaluations of Census Bureau operations for some years. The GAO, a congressional agency, maintains a web page about its work on the decennial census that links to its most recent 2010 Census evaluations. [Update: The link is no longer active because GAO removed the 2010 Census from its list of high-risk activities.] The inspector general’s office in the Commerce Department, of which the Census Bureau is a part, includes links on its home page to its other work on the 2010 Census.