Originally Posted by
oliver2002
You'll be surprised how many countries require their 'nationals' to have a visa to enter their 'own' country. Especially for GB/UK it gets complicated:
You're right that there are a number of countries, but the only one I can think of right now is Cuba. Cubans living abroad need to secure a visa if they want to visit their country. It's a way of keeping out exiled dissidents or other troublemakers.