Um, the Berlin Wall was put up to keep people IN.
That’s really not the same thing.
Except maybe McCain is revealing the next step in our overlords's plans: restrict anyone/everyone from leaving.
After-all, we can't have people trying to escape the NSA's surveillance jurisdiction, now can we?
Actually, it may be closer to the Berlin Wall than you’d think. Americans now have to have papers (government permission) to LEAVE this country.