With allies, there's even more leverage. We would not be limited to the WTO or other means to exact a price for their complicit behavior.Grant, for the moment, that the writer knows wherefrom he speaks. Do you think that the SK gov't doesn't know the source of that steel, that it doesn't track commerce with the PRC. So, given that stipulation, would you accept the SK gov't being shocked, shocked that one (or more) of their corporations were assisting in and end run around US sanctions purely for profit? Or would you conclude that the gov't was complicit, even though they are weakening their primary protector from NK and China?
Would it be more effective in squelching this problem to simply apply a broad tariff or spend thousands of man hours researching and documenting each claim of cheating and thousands more arguing with the government in question before implementing some kind of sanctions that the government in question will further tie up in complaints to the WTO. Justice delayed is justice denied, and the damage continues
Those dealings are unlikely to be reported, for good or bad. I would suspect horsetrading of other assets (or liabilities) in that situation.
But, let's even lump SK and the TPP countries into "China." That still leaves the EU and our NAFTA partners as not-China. The EU is the one primarily offended, by all appearances.