Originally Posted by
greentips
The best way to get through security with your dignity intact is to live on the northern border, drive to the nearest air carrier airport in Canada, buy a ticket to a second Canadian destination nearest your destination, rent a car and drive to your destination from there. Welcome to FT.
Substitute Mexico at your leisure, although that is more likely to be an unpleasant drive.
You can also attempt to take amtrak from Montreal to NYC, DC, etc.