Insource government jobs currently performed by "body shop" contractors. This will save the government 10's of billions a year. Pay the worker a little bit more and get rid of the zero value add "body shop" company / contract.
This idea goes hand-in-hand with streamlining the government's hiring practices. These civil servant exams are great, but if you are looking for an Electrical Engineer or a Computer Programmer, just take a resume and hire the guy! You do it anyway with the body shops and pay twice as much.