The problem is that most 3rd world countries will just come knocking on your doors and take everything away, if the US goverment requests it.
After all, those countries wouldn't be 3rd world countries, if they had the power to resist US threats/requests. Or they are part of the "axis of evil" (or whatever the current propaganda term is), in which case the internet connection to that country could either be cut off, or be heavily censored, if it isn't already happening.