And if they do, would the US government pay off any current contract obligations IBM had to break?
Edit: Which is why investors often choose not to invest in companies based in countries that have a history of economic or political instability. It can be difficult to hold someone to their obligations after investing if the state itself isn't going to consistently side with the rule of law. Russian and Chinese investors, for example, were they not already dealing with an even more unpredictable state, would possibly choose not to invest in the US because of unpredictable relations. But, most international investors consider US law to be predictable and stable and safe for investors.