Trump delays tariffs on most imports from Mexico until April

What happened to the NAFTA (1994-2020)/CUSFTA(1989-1994)/USMCA (2020-2034) free trade agreements between the US, Canada and Mexico?

Perhaps, Trump did not fully realize that e.g. the passenger automobile production in North America (US, CA, MX) is highly integrated across borders.

Trump delays tariffs on most imports from Mexico until April "This is the second one-month postponement Trump has announced since first unveiling the import taxes in early February."