One of the most important provisions of NAFTA provided for the status of « domestic products » for products imported from other NAFTA countries. No state, province or local government could impose taxes or tariffs on these goods. In addition, at the time of the agreement, tariffs were either abolished or abolished in five or ten equal steps. The only exception to the exit was the issue of sensitive points for which the exit period would be 15 years. Many critics of NAFTA saw the agreement as a radical experiment developed by influential multinationals who wanted to increase their profits at the expense of ordinary citizens of the countries concerned. Opposition groups argued that the horizontal rules imposed by nafta could undermine local governments by preventing them from enacting laws or regulations to protect the public interest. Critics also argued that the treaty would lead to a significant deterioration in environmental and health standards, promote privatization and deregulation of essential public services, and supplant family farmers in the signatory countries. Clinton signed it on December 8, 1993. The agreement came into force on 1 January 1994.   At the signing ceremony, Clinton paid tribute to four people for their efforts to reach the historic trade agreement: Vice President Al Gore, Council of Economic Advisers Chair Laura Tyson, National Economic Council Director Robert Rubin and Republican Congressman David Dreier.  Clinton also said, « NAFTA means jobs. U.S. jobs and well-paying American jobs.
If I didn`t believe it, I wouldn`t support this agreement.  NAFTA replaced the old Canada-U.S. free trade agreement. Other provisions have been introduced to settle disputes between investors and participating countries. Such rules allowed, among other things, companies or individual investors to sue against compensation from any signatory country that violated the rules of the treaty. But the most important aspect for Canada – opening up its economy to the United States, by far Canada`s largest trading partner – was before NAFTA, when the Canadian United States came into force in 1989.