Considering the upwardly spiraling precautions and paranoia concerning travel to the US, I think that other nations could turn this into an advantage for themselves. Think of the fun ad campaigns:
Freedom Flies In France
Come to Australia; we were criminals once, too.
Viva Mexico!!! Cheap overnight travel by truck!!! No delays!!!
Travel Canada, so close and yet so far…
Israel, where air security was invented
Visit Russia (we already know who you are…)
I’m sure you can think of others. 🙂