[Colorado Buckeye]

It doesn't matter if it is a treaty or a trade agreement.

There is a method of dispute resolution and that is an arbitration panel and the each nation's judiciary must enforce the arbitration panel's judgement(s).

I don't think that last part is true. Our courts are bound to uphold laws passed by the Congress. But the Constitution gives Congress the power to create law, not some foreign arbitration panel. I don't think that the Congress can pass a law to delegate this lawmaking authority to a third party.

In any event, the Congres can pass another law to remove any authority that the foreign arbitration panel might have under US law by simply passing another law.

[Ben Ficklin]

You are correct. The US can get out of NAFTA altogether, if that is desirable. Or, The US can seek to renegotiate NAFTA. In the meantime, NATFA, as it was negotiated, is in effect.

There has been talk of the dems, depending on who gets elected prez, wanting to renegotiate NAFTA to add labor and environmental protections.

The problem with all that is that if you open the can, all the worms escape.