Under the plan, Mr. Schneiderman, a Democrat, seeks to exempt New York's double jeopardy law from cases involving presidential pardons ... The current law and the concept of double jeopardy in general mean that a person cannot be tried for the same crime twice.New York Attorney General Seeks Power to Bypass Presidential Pardons - NYT
Not to mention the 5th amendment to the US constitution. That said, double jeopardy is not the protection most people think it is. It is no more meaningful than the so-called Right to Keep and Bear Arms which is not actually a a right to keep and bear arms.
this is an interesting twitter site which just happens to re-expose some of the legal tangles of the Marc Rich pardon and WJC - scroll down some..