Book excerpt: Immigration policy is a subject of intense political and public debate. In this second edition of the widely recognized and authoritative work The Making of the Mosaic, Ninette Kelley and Michael Trebilcock have thoroughly revised and updated their examination of the ideas, interests, institutions, and rhetoric that have shaped Canada's immigration history. Beginning their study in the pre-Confederation period, the authors interpret major episodes in the evolution of Canadian immigration policy, including the massive deportations of the First World War and Depression eras as well as the Japanese-Canadian internment camps during World War Two. New chapters provide perspective on immigration in a post-9/11 world, where security concerns and a demand for temporary foreign workers play a defining role in immigration policy reform. A comprehensive and important work, The Making of the Mosaic clarifies the attitudes underlying each phase and juncture of immigration history, providing vital perspective on the central issues of immigration policy that continue to confront us today.