OTTAWA - The immigration department says it's working "as quickly as possible" to resolve citizenship-by-descent claims, as some claimants say they did everything Ottawa asked them to do.

OTTAWA - Some people who received proof of Canadian citizenship under the "Lost Canadians" legislation are now being told to surrender their certificates of citizenship.

Canadian immigration authorities are re-examining citizenship-by-descent applications, prompting some recently approved citizens to return their certificates. Concerns over…