An astute observation that Chretien was catering to base political considerations for the Liberal party rather than acting out of moral principle. But even though it wasn't for the right reasons, Canadians were glad not to officially join Bush/Blair in that illegal, immoral invasion. 
Chretien found other ways behind the scenes to support Bush, particularly in taking on the heavy fighting in Afghanistan in 2005, which relieved about 3,000 U.S. troops to bolster the (disastrous) occupation of Iraq.