1. Release of the 1st confession tape to the public on Dec. 13th, 2001 tainted any possible jury pool in the U.S.
2. The tape would not have been released if it were needed as admissible evidence for a court trial.
3. No court case is expected.
QED
OBL was DEAD Dec 13th, and remains so.
Flaw in your argument. U.S. has TONS and SCADS of evidence you are not even remotely aware of. The tape was never "needed as admissible evidence" and therefore its release is not in the slightest bit useful for determining OBL's current status or U.S. knowledge of same.