The US is really the only country in the world that's this aggressive about their citizenship. A few others come close (I believe Turkey doesn't allow you to re

The US is really the only country in the world that's this aggressive about their citizenship. A few others come close (I believe Turkey doesn't allow you to revoke Turkish citizenship and claims children of Turks born abroad as citizens, or something like that), but most western countries determine citizenship based on where and how you register your child's birth. It's quite unreasonable to expect all non-Americans to be aware of all these little exceptions in US law.