Statute of Limitations on Administration Corruption?

What is the statute of limitations on Federal Administration corruption? The Obama Administration seems to think - or at least, wants to get away with - crimes that have been committed in the recent past, BECAUSE they have devised their own impromptu statute of limitations.

"What difference does it make" that the Administration is responsible for deaths, as long as they are before an election and serve the Greater Good?

It is coming to a point where Federal "officials" could be subject to arrest in component states of these united States, BECAUSE the Administration feels fit to snub its nose at the separated powers WITHIN the Federal government.