You are thoroughly misunderstanding basic law. Copyright law doesn't say anything about that. A violation of copyright is usually between you and the author. ITAR (22 C.F.R. 120-130) regulations specify what can and can't be shipped outside of the US and to where. USC 22 Section 2778 is the legal basis for ITAR.
Yes, exactly. Thank you. So when you said "the copyright holder orally waived his right to sue for copyright infringement," that was completely off-base, wasn't it? In truth, because copyright law does not speak to taking North America-only software out of North America, Bill can't possibly have been waiving his right to sue me for copyright infringment - there is no infringement inherent in such an act, and thus there is no cause of action for a copyright suit. Therefore, the only thing he could possibly have been waiving was his right to revoke my license. QED.