One commenter appears to have assumed the former, the person replying assumes the latter.
http://www.afr.com/business/accounting/irs-chases-us-citizen...
I know someone who is giving up US citizenship on return to Australia for this reason.
Which is exactly what I meant, you are paying the membership fees whether you use the services or not. The US govt knows that, if you dont like you are free to give up that passport which I am sure you wont.
It's not that simple.
Not that I think it's a good idea to get rid of borders today, just that a natural extrapolation of western morality, which favors choice over birth, leads you down a path to a borderless world.
The US govt knows that most non resident US citizens even if they dont like paying taxes are still going to pay it because those citizens still want to be part of club US.