It is amazing how some presidential candidates are blaming the North American Free Trade Agreement for U.S. job losses. They seem to believe that a substantial part of the three million manufacturing jobs lost since 2000 resulted from Nafta, and that outsourcing of manufacturing production to Mexico and Canada resulted in a huge trade deficit.

Too bad they don't know that the growth in the deficit isn't due to manufactured goods, but to oil and gas imports.

There...