parts producers may use inputs and components produced by another NAFTA partner to assemble
parts, which are then shipped to another NAFTA country where they are assembled into a vehicle
that is sold in any of the three NAFTA countries.61 NAFTA provisions consisted of a phased
elimination of tariffs and the gradual removal of many non-tariff barriers to trade. It provided for
uniform country of origin provisions, enhanced protection of intellectual property rights, adopted
less restrictive government procurement practices, and eliminated performance requirements on
investors from other NAFTA countries. NAFTA established the removal of Mexico’s restrictive
trade and investment policies and the elimination of U.S. tariffs on autos and auto parts