U.S. Backing Down on ICC?

Hmmm. This one is going to take some digesting:
Drops Demand for War Court Immunity
UNITED NATIONS, July 10 — The Bush administration agreed today to drop its demand that the U.N. Security Council grant Americans serving in U.N. peacekeeping missions permanent immunity from the international war crimes tribunal.
U.S. officials said they are seeking a temporary exemption from prosecution that would buy the United States time to negotiate bilateral accords and military agreements barring individual governments from surrendering U.S. nationals to the International Criminal Court.

I’ve heard a lot of good arguments lately about why the ICC is unconstitutional… it’s unclear to me how this compromise changes that. Little help, Stephen?