Originally Posted by
ffay005
What I would like to know is if those 12 reasons apply to me in this case. I should assume they don't since all texts only mention travel from the US to Cuba, but I would be on no such flight, only flying from Cuba to the US. However, US immigration would know that I was in Cuba. I wonder if it's a problem for them.
Yes, the "reasons" still apply. You were in Cuba. As a US passport holder, you can't be there without a legal reason, and any passport holder entering the US directly from Cuba also has to have a reason other than tourism.
Currently on entry to the US, there is no problem and only the most basic of questions about where you've been, before getting a big Welcome Home. All that could change after Friday of course.
There are various discussions of all of this on Lonely Planet's Thorn Tree forum for Cuba, with contributions from folks, including US passport holders, who have been going to Cuba regularly for years.