The North American Free Trade Agreement, or NAFTA, is an agreement between all the countries in North America to have no tariffs for goods imported between themselves. It has caused strife throughout such states as Ohio, but is beneficial to such southern states as Texas. The North suffers from no tariffs, the South benefits. Ring a bell for anyone who knows about American history? The nations involoved and Canada, the United States and Mexico.
NAFTA was put into place by Bill Clinton's Adminisration, pushed for strongly by Hillary Clinton. Free trade can leave rich corporate magnates free to exploit poor people, fair trade is a better deal.