The problem is not the quality of Canadian steel. The problem is that China produces 30 times more aluminum today than it did 20 years ago. That means the aluminum market has tremendous overcapacity, and China will want to find a market for that aluminum. It will sell it much lower than the market price. We are afraid China and other countries will dump their aluminum in Mexico. Eventually, it will hurt Canadian producers.
On February 18th, 2020. See this statement in context.