The first ever meeting of a Canadian Prime Minister (St. Laurent) and a Mexican President (Cortines) took place at White Sulphur Springs, West Virginia in March, 1957, at the invitation of US President Eisenhower, 37 years before NAFTA. Source.
Agustin de Iturbide, aka Emperor Agustin, abdicated on this date in 1823, bringing the First Mexican Empire to a close. Here he is on an 8 reales piece. Source.