Mr. Speaker, the polluter pay principle is very important, but there are other principles that are also very important.
I would point out to the hon. member that it is often necessary to reduce pollution at the lowest possible cost, spending the least amount possible. That is another principle. It is also important to have systems whereby no one region of the country is disadvantaged.
That makes three principles. All three are important and I cannot say that any one is more important than another.