Prometheus 6

Yes I posted this before, back when I thought our Democratic Congress might do something. 

Something has been gnawing at me since Senators Spector and DeWine submitted their bills intended to excuse the president's domestic wire tapping programs.

First, the relevant part of Article 1, Section 9 of the Constitution:

No Bill of Attainder or ex post facto Law shall be passed.

There's a bunch more, but they are cleanly severable.

Next, the definition of ex post facto

Formulated, enacted, or operating retroactively. Used especially of a law.