10 years ago, my wife and I were with a tour group crossing into Canada from Niagara Falls, NY. The group contained mostly American citizens, but also a Norwegian, a German couple, and mother & daughter from Bermuda. Canadian immigration boarded the bus, quickly glanced at all passports, except for the Bermudan mother & daughter who were taken into the office for about a half-hour. Turned out the daughter was a first-line Olympic Field Hockey Judge, thus had traveled extensively throughout the world over the previous 20-30 years. The Canadians were quite suspicious of her even though both she and her mother were born in Bermuda and had been UK citizens for all of their lives. We Americans were surprised with the Canadian treatment, but the daughter said she received this treatment all the time, especially when entering UK-connected countries, including Australia and New Zealand.