Mr. Speaker, currently, residence is not defined in the Citizenship Act and, as a result, it is possible under the current act for someone who has spent little time in Canada to be granted citizenship. The proposal to lengthen the requirement from three to four years out of six and to replace residence with a requirement for physical presence would mean that students who are in school in Canada are typically going to have to wait a little longer to become citizens in Canada.
In the House of Commons on May 28th, 2014. See this statement in context.