Its funny that some would expect an illegal alien to be honest about his real name.
They don't. It's just window dressing for unsuspecting citizens who do not think things through. They're here illegally, they have no proof of identity whatsoever. Of course they're not using their legal name from a foreign jurisdiction, and of course that name changes when expedient. That's known as an alias for people who are held to account under the law.
It's the same as accepting the notion that photo ID is just so darned hard to acquire that it's racist to expect it, when the true motivation is expediting vote fraud.