You asked me about how impractical this is. Of course, you have the issue of retroactive duties and how you price to your customers, but more than that, the way this deal is set up, there is no margin for the companies. So how is it practical to run your business when you have no margin?
The export tax also takes the money away forever. At least in fighting the U.S. we have the hope of getting it back one day.
I'd ask questions about this deal such as these: It's so poorly negotiated; why is $500 the cap when $355 is the benchmark? Why don't we have no taxes, no exports, no duties over $355?
I want to leave time for other people.