With regard to the latter part of your question, about the negotiating dynamic, Steve mentioned in his opening remarks that some of the U.S. initial proposals were unorthodox. That's very fair in the case of the rules of origin package they initially presented. In addition to the 50% U.S. content requirement, they had some ideas whereby you would need to know the origin of the petroleum, for example, that was used to make plastics found in the vehicle. There were similar things with respect to other metals and materials.
To go back to the question raised earlier about keeping the industry competitive, when we spoke to the industry, they simply said that these ideas were untenable. That amount of tracing or tracking of materials was something they just wouldn't undertake, especially when, in some instances, we're talking about getting a fairly small amount of preference. With a car entering the United States, it's only a 2.5% tariff. There's only so much compliance work on rules of origin that a company is prepared to do to save that 2.5%.
Some of these ideas, such as the 70% steel and aluminum requirements and some of the other things in there, I wouldn't say were all Canadian ideas, but we tried to move the negotiations in the direction of finding ways to incentivize the use of North American materials while not completely undermining the competitiveness of the auto industry. Of course we want automakers to use Canadian materials and Canadian parts, but we have to be mindful that they have to stay competitive and recognize that producers from outside North America are not facing those same sorts of requirements. This is within the NAFTA regime.
That's sort of how some of these ideas evolved.