North American Common Border Security Efforts

A report on some potential results of the Security and Prosperity Partnership among Canada, Mexico and the U.S. here:

Just exactly who's allowed into North America - and how long they can stay - could be heavily influenced by the complex web of initiatives known as the Security and Prosperity Partnership.
Canada, the United States and Mexico are collaborating on more than a dozen traveller security programs that fall under three umbrellas: creating trusted border documents, developing compatible immigration measures and sharing information on high-risk travellers.
The goal is to ensure none of the three countries is a weak link in the continental security chain.