I'm from Europe and can get into the US easily on a visa waiver, however I still need a new identity that won't fail background checks in order to work.
I know Mexicans do fine with a fake ID and some random SSN because they to manual labor type jobs don't need to pass background checks, but I would need a better identity than that.
Depending on your country you can get a 'real' fake identity. Basically just using an escalation of privileges technique.