Jean Chrétien and George W. Bush (January 2001 – December 2003) thumb|Jean Chrétien shakes hands with George W. Bush during a meeting in September 2002 Relations between Chrétien and George W. Bush were strained throughout their overlapping times in office. Canada offered its full assistance to the U.S. as the September 11 attacks were unfolding. One tangible show of support was Operation Yellow Ribbon, in which more than 200 U.S.-bound flights were diverted to Canada after the U.S. shut down their airspace. Later, however, Chrétien publicly mused that U.S. foreign policy might be part of the "root causes" of terrorism. Some Americans criticized his "smug moralism", and Chrétien's public refusal to support the 2003 Iraq war was met with negative responses in the United States, especially among conservatives.
Jean Chrétien and George W. Bush (January 2001 – December 2003) thumb|Jean Chrétien shakes hands with George W. Bush during a meeting in September 2002 Relations between Chrétien and George W. Bush were strained throughout their overlapping times in office. Canada offered its full assistance to the U.S. as the September 11 attacks were unfolding. One tangible show of support was Operation Yellow Ribbon, in which more than 200 U.S.-bound flights were diverted to Canada after the U.S. shut down their airspace. Later, however, Chrétien publicly mused that U.S. foreign policy might be part of the "root causes" of terrorism. Some Americans criticized his "smug moralism", and Chrétien's public refusal to support the 2003 Iraq war was met with negative responses in the United States, especially among conservatives.