Our city donates medical equipment to Cuba.Since it doesn't happen to be that easy to move to another country and become either a citizen or permanent visitor status, discussing this as a hypothetical question may not help anyone.
Unless you are married to a foreign-born resident or hold dual citizenship, it can be quite difficult to receive approval to become a foreign citizen. It took friends of ours two years to become permanent residents of Panama, and the wife spoke fluent Spanish (she was born/raised in South America). The basic medical care was excellent - most Americans seem unaware that a large percentage of foreign doctors and nurses receive their training in the U.S.
However, for difficult illnesses/operations and specialist care, Cuba is the center point for all of Central and South America. It's where everyone goes for critical care. It's how Castro's government survived all those decades of US embargo. The medical system for foreigners who pay that much-needed hard cash is extremely important to their economy. Their doctors are esteemed so highly that even Communist leaders from Europe and Asia have secretly gone to Cuba when they needed specialized treatments.
Canada does not have an embargo on Cuba. Thanks for the information.