The NAFTA is a trade and investment deal signed by the governments of Canada, Mexico and the United States. NAFTA came into effect in 1994. It gave new powers to corporations to unilaterally control investment flows, at the expense of workers rights and standard of living. Much more than a trade deal, the NAFTA has become the model for international agreements. It has reinforced inequalities of power across North America and has entrenched an economic model of integration that has resulted in a growing gap between the rich and poor of North America.