For now, Canada and Mexico must redouble their advocacy efforts in the U. S., especially at the state and local level, to put pressure on the Trump administration if NAFTA is to be revised and not rescinded. [...] Elephants in the Room I: Rules of Origin The U. S. wants to revise the current rules of origin to ensure a higher percentage of this U. S.-only content. [...] Rules of origin were first introduced in the Autopact (1965) to ensure most of the production took place in Canada and the U. S. and then the Canada-U. [...] The Boeing-Bombardier dispute is potentially more dangerous and could affect the negotiations in the same fashion that shakes and shingles nearly scuttled the CUSFTA negotiations in 1985- 1986. [...] The Commerce Department announcement on the last day of the Ottawa round of negotiations made a statement, but embarrassed the Canadian hosts.