Just as I understand there is some Cuban goodwill with respect to the doctors they send abroad - and early on Fidel's creation of better literacy/healthcare programs.

But remember this: Fidel worked with the Russians to put nuclear weapons 40 miles away from the USA - and created a crazy situation - the closest the world has ever been to full blown nuclear war. That was this man's hubris - he nearly helped put the world on fire. That kind of existential threat is not easily forgotten. Point being: the 'embargo' is 100% Fidel's fault, and he could have easily taken steps to have it removed, but his ego would not allow it.

I'm not an expert on the embargo, and it's a bit complicated because it's got multiple pieces of enabling legislation, but at first glance the only one of those that says anything close to what you're saying is Title III of the Helms-Burton act (see http://www.treasury.gov/resource-center/sanctions/Documents/... for full text). That explicitly allows companies "trafficking in property which was confiscated by the Cuban Government on or after January 1, 1959", if it was confiscated from a United States national, to be sued in US courts. This obviously only matters to companies doing business in the US, because otherwise they don't care whether they get sued to start with. Note also that certain forms of real estate are excluded from the provisions of this law, again at first glance.

Am I just missing something? Do you have a citation for your claim?