From this Globe and Mail article: http://news.nationalpost.com/2011/08/29/baird-promises-canadian-sovereignty-will-not-be-compromised-by-border-deal/
Because everyone knows we gave that up years ago when Mulroney signed off on free trade.
Still, will we still need passports to go to America? Yes, then f*%@ this $#!t. (I'm making an attempt to censor my extreme language, but it's difficult when I talk politics..)