That to me looks like good news. Freeport will now or in the future, have to buy and sell US produced Copper and Gold, with US labor and taxes. Operating across borders using cheap labor and no US taxes, is how they hold prices below normal.
In the past, the name of the game was promote and help the borrowers and spenders, and SCREW the American savers and screw the American producers. Its over. Any producer of any thing always got a feast or famine existence. Just enough during the feast to keep you barely alive until you get thrown the next bone.