Dan Guttman’s testimony before the United States Senate Committee on Governmental Affairs regarding Who’s Doing Work for Government? Monitoring, Accountability and Competition in the Federal and Service: Contract Workforce can be found here.
Testimony of Dan Guttman before Senate Committee on Environment and Public Workers
You can read the testimony of Dan Guttman before the Subcommittee On Transportation, Infrastructure, And Nuclear Safety Of The Committee On Environment And Public Works United States Senate here.