Trump tariffs on Canada could jeopardize oil and gas exports to U.S., says trade chief

President-elect Donald Trump's threatened tariffs could prompt Canada to pursue dollar-to-dollar retaliation or an export tax on oil and gas bound for the U.S.

Trump tariffs on Canada could jeopardize oil and gas exports to U.S., says trade chief
President-elect Donald Trump's threatened tariffs could prompt Canada to pursue dollar-to-dollar retaliation or an export tax on oil and gas bound for the U.S.