My understandingIs the environmental agreement has reached its government decision date and Mexico has not acted. (Under laws as of that date) to recommend actions, approve or deny the concession. I think USMCA would consider that to be "unfair" practice to any open pit mine that has been put on hold by Mexico government when there is no existing legislation in place to justifiably deny the concession other than a failed proposal. These concessions could technically be put on further hold as the government "debates" or " legislates" on it but as far as the USMCA international agreement goes there is no difference between approved concessions and concessions that should have been approved by existing law. That's basically the whole reason you have the agreement to PROTECT your PRIVATE investments in other countries.