Collectives for Washington, D.C.

I saw this years ago, and cannot remember where. I would give credit if I could, but at this late date I cannot.
You know all the different collectives that are in the animal world, e.g., a gaggle of geese, a pride of lions, etc. Some wag came up with his own list, which included a senility of Senators and an incompetence of Congressmen.