The new NAFTA is of course the USMCA. Mexican Deputy Foreign Minister in response to the US moves on steel:

(ICYMI, here earlier: US tariffs news - to impose levies on structural steel from China and Mexico, but not from Canada)

OK, back to the dep forgn min:

  • says preliminary subsidy determination announced by US does not put in danger the ratification of North American trade deal USMCA
  • US subsidies on steel are against certain private companies in Mexico, not wider steel industry
  • US tariffs on Mexican structural steel is a "new problem" and Mexico will have to be very active supporting its steel-makers