*Illegal aliens* means they've entered the country unlawfully and without documentation. They have committed a criminal act against the people of the country and need to face the consequences of their trespass. They are alien to the country, it's laws and customs. *Undocumented immigrants* implies they have no documentation to state their current status which the term "undocumented" is ambiguous as it can include people who have not registered for any "official" documentation (birth certificates, drivers license, passports...) but are still legitimate citizens. Niggers are playing kike wordgames to try and first change nomenclature and then shift meaning. It will always be funny how definitions of "Immigration" change when you speak the same of Israel. (I know I'm probably preaching to the bubble that already knows...)