Good grief! The corruption in D.C. is just breath taking. Damn, is everyone up there crooked?
If I hazard a guess, after excluding the certifiably malicious, the corrupt, and the co-opted, you are left with a small number of honest people. A few of them are high profile (e.g. Rand Paul) but others are virtual unknowns on the fringe of political circle in DC. Public probably have never heard of them.