I predict that after Bush leaves office, neither he nor Cheney, Rumsfeld, Ashcroft or Gonzalez will visit Western Europe except if sent there as part of a diplomatic mission. The trials being conducted in Italy right now over the CIA kidnappings there a sign of the future on the international level. I might be wrong about this for the first few years, but after a while, they'll remember what happened to Pinochet and stay away.
It's small recompense to the rest of us, but the number of countries these people can't visit will grow over time. And Bush is younger than most of them - 30 years from now, he'll still be around. I wouldn't rule out America being a place where he ultimately gets tried at that point, just as it happened to Pinochet in Chile itself. That'll be worth waiting around for.