The US is not alone in having a lot of illegal immigrants. It's hard to say to what extent the US is exceptional in their number (again, taking into account th

The US is not alone in having a lot of illegal immigrants. It's hard to say to what extent the US is exceptional in their number (again, taking into account the size of the US). However, even if this is an exception, the number of illegal immigrants is still too small to catch up to countries such as australia (under the unrealistic assumption that australia has 0 illegal immigration).