Apparently it's forced Canadian lumber companies to become even MORE efficient.
"U.S. tariff on Canadian lumber 'catalyst for dramatic change'
Last Updated Wed, 18 Dec 2002 6:16:07
PRINCE GEORGE, B.C. - Some U.S. lumber producers are admitting the hefty tariffs imposed on the Canadian industry have backfired.
The U.S. Commerce Department imposed a 27 per cent tariff on exports of homebuilding wood earlier this year. But an official with a key American lobby group says instead of reducing the amount of Canadian wood in the U.S. market, the opposite has happened. "
http://cbc.ca/stories/2002/12/17/lumber021217I wonder if the same thing will happen with wheat.