This getting just beating a dead horse. Trump promised to rip up NAFTA pre election, so he's attempting to at least show his electorate he listened to them. To actually rip it up would take the will of Congress,  which isn't there.
At the end of the day there will be no new agreement and things will stay as they are.
It's a crisis invented by the media for no reason other than it's the only thing that sells; there must be a panicked headline everyday of the week over something.