For starters, how the fuck do you enforce an embargo without the threat of violence, and secondly I love how me and all my communist friends are expected to have a PhD in world history and economics while your average liberal can cite two state department links and a CIA funded NGO and call it a day.
I heard that the terms of the embargo are also deliberately vague, so it's hard to know for sure whether your cargo would be allowed or considered sanction breaking. What company would want to roll the dice with US authorities every delivery?