I find it interesting even the Chinese officials seem to be setting up their families in Australia, Canada and the U.S.A. (even Toronto, and Ottawa Canada) as fast as possible. But I think for the rest of us (the U.S.A.) the real danger is i-clones.
I think it is just a matter of time before you start seeing low cost i-clones everywhere; I am surprised we have not already really. What happens when you base a large part of your economy on small hand held devices made in places with extremely clever people with little to fear.
You maybe able to control things like access in the U.S. but I don’t think it will apply everywhere.