There certainly is a review in the immigration context for long-term permanent residents who may be subject to deportation because of the provisions of the Immigration and Refugee Protection Act. For those cases there is a fairly careful review that goes through before those individuals would be subject to removal from Canada. Again, if the individual had been adopted after February 14, 1977, even if they are not now a citizen, they would benefit from this amendment to the Citizenship Act. Likewise, anyone who was born to a Canadian citizen overseas after February 14, 1977, would gain the benefit.
On June 19th, 2006. See this statement in context.