Democratic Senator Barack Obama, his party's nominee for the presidency, created a flap during the primaries by saying that he would demand to renegotiate the North American Free Trade Accord with Canada and Mexico.

We asked Paul Heinbecker, a Distinguished Fellow at the Centre for International Governance Innovation and adjunct professor at Wilfrid Laurier University, former Canadian ambassador to the UN and Germany and chief foreign policy adviser to prime minister Brian Mulroney, about the possible fallout of Obama's statements.

Q: Democrats often sound more protectionist than Republicans, but are they really? Was Obama posturing harmlessly for domestic political consumption, or is...

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