>> Logically speaking, someone who just wants a SIM for his personal use, he won’t be bothered about providing his authentic documents to the network, however when someone has dirty business to do, providing authentic documents is definitely on his not-to-do list. Yet another claim of "You don't need privacy if you have nothing to hide." Does anyone know if the US requires all SIM cards to be "registered"?
There may be state-level laws on this, but in general I've never needed to provide authentication to buy a prepaid cell phone. (Although you would need to pay cash to be anonymous). I know that some lawmakers are trying to change this.