While this isn't necessarily the exact kind of analysis you're talking about, it's very close to what the Government Accountability Office was set up to report

While this isn't necessarily the exact kind of analysis you're talking about, it's very close to what the Government Accountability Office was set up to report on -- and from what I can tell, they do their job pretty well. We don't hear about them very often in large part because what they do isn't very "sexy," politics-wise.