I'd like to speak to that.
Unfortunately, API data include the record locator for the PNR, and as long as the U.S. government gets the record locator, they can go to the CRS or GDS and retrieve the entirety of the PNR in secret, without the airline even knowing and without any recourse. In effect, regardless of whether the U.S. retains or gets all or any part of the PNR, as long as they have the API data with the record locator, they have in effect access in perpetuity to the entirety of PNR. For that reason, I don't think that amendment would have the effect you might desire for it.