1. Yes - but a law requiring US carries to perform cutting edge research to detect who you're talking to is... unlikely. It's also much more likely to violate t

1. Yes - but a law requiring US carries to perform cutting edge research to detect who you're talking to is... unlikely. It's also much more likely to violate the constitution than a law prohibiting trade. 2. Sure, but the entities involved in evading the ban wouldn't be US entities.