Trump and Trudeau will be nowhere near the negotiating table even if NAFTA is renegotiated, there will be professional negotiators doing all the work, the Ministers, Secretaries, PM's and Presidents only get involved after everything has been sorted out pretty much. Besides, Trump reiterated that TPP was a goner but backed away from saying anything about NAFTA. Incidentally, isn't it ironic that Trump's going to kill TPP just as Hillary Clinton was?