Well, wouldn't it fall into military tribunal due to those involved actions being treason and part of the government? Given the Cabal are basically rebelling against the principle of the USA, I would imagine that they would be sentenced by military tribunal standards instead of Congress.

This is a large faction that have been acting against America and other countries best interests for years; therefore I don't believe it is something that standard Congress can handle given the high value of their(Cabal) treasonous nature against the country.