[187] A cease fire was arranged on March 3, and the UN passed a resolution establishing a peacekeeping force in a demilitarized zone between Kuwait and Iraq.[188] A March 1991 Gallup poll showed that Bush had an approval rating of 89 percent, the highest presidential approval rating in the history of Gallup polling.[189] After 1991, the UN maintained economic sanctions against Iraq, and the United Nations Special Commission was assigned to ensure that Iraq did not revive its weapons of mass destruction program.[190]

NAFTA
Main article: North American Free Trade Agreement
From left to right: (standing) President Carlos Salinas, President Bush, Prime Minister Brian Mulroney; (seated) Jaime Serra Puche, Carla Hills, and Michael Wilson at the NAFTA Initialing Ceremony, October 1992
In 1987, the U.S. and Canada had reached a free trade agreement that eliminated many tariffs between the two countries. President Reagan had intended it as the first step towards a larger trade agreement to eliminate most tariffs among the United States, Canada, and Mexico.[191] The Bush administration, along with the Progressive Conservative Canadian prime minister Brian Mulroney, spearheaded the negotiations of the North American Free Trade Agreement (NAFTA) with Mexico. 