He actually didn't say "no."
"As you three leaders meet here, there are a growing number of people in each of your countries who have expressed concern about the Security and Prosperity Partnership. This is addressed to all three of you. Can you say today that this is not a prelude to a North American Union, similar to a European Union? Are there plans to build some kind of superhighway connecting all three countries? And do you believe all of these theories about a possible erosion of national identity stem from a lack of transparency from this partnership?" was the question, according to a White House transcript.
"We represent three great nations. We each respect each other's sovereignty. You know, there are some who would like to frighten our fellow citizens into believing that relations between us are harmful for our respective peoples. I just believe they're wrong. I believe it's in our interest to trade; I believe it's in our interest to dialogue; I believe it's in our interest to work out common problems for the good of our people.
"And I'm amused by some of the speculation, some of the old – you can call them political scare tactics. If you've been in politics as long as I have, you get used to that kind of technique where you lay out a conspiracy and then force people to try to prove it doesn't exist. That's just the way some people operate. I'm here representing my nation. I feel strongly that the United States is a force for good, and I feel strongly that by working with our neighbors we can a stronger force for good.
"So I appreciate that question. I'm amused by the difference between what actually takes place in the meetings and what some are trying to say takes place. It's quite comical, actually, when you realize the difference between reality and what some people are talking on TV about."
Bush has only been in politics for 13 years.