Opinion: Canada must win exemption from NAFTA's proportionality rule

U.S. President Donald Trump is known for tweeting alternative facts. But occasionally, perhaps inadvertently, his tweets conform to real facts. When he approved the building of TransCanada’s Keystone XL pipeline, Trump said it would “reduce our dependence on foreign oil.” Given that the pipeline would be filled with mainly Alberta bitumen, Trump revealed that he thinks Canadian oil is American oil.
Unfortunately, it’s virtually true. NAFTA’s proportionality rule (Ar