Is the United States of America a good trading partner

That's my question. The NAFTA panel rulings, all of which have found the U.S. countervailing duty determinations on Canadian softwood lumber to be illegal. Yet the US persists in maintaining their duties on softwood lumber. They would prefer to negotiate instead. Negotiate what? The NAFTA courts basically have said that the US has acted illegally in imposing these duties. We are their biggest trading partner and they chose to act this way? It is so typical of America in treating their Allies so shabily. Perhaps we should start thinking of limiting our oil exports. How can we have NAFTA when the US will break the rules when they feel its appropriate?