In a public event this morning, Senator McCain took both Hillary Clinton and Barack Obama to task on trade.

"I want to tell our Canadian friends, I want to tell our friends in Mexico and other trading partners around the world that I will negotiate and conclude free trade agreements and I will not, I will not, after entering into solemn agreements, go and say that I will abrogate those agreements," McCain said at a corporate town hall meeting on the sprawling Dell campus north of Austin.

And both in his appearance before the workers and later during a press availability, McCain attempted to tie the importance of holding fast to NAFTA to keeping the support of the Canadians in the war on terrorism.

"I think it’s important to recognize that all these things are inter-connected," McCain told reporters, pointing to the Canadian troop presence in Afghanistan.