What's wrong with letting them come here, honestly?
Yeah, yeah yeah, I know what you're thinking. "How are we supposed to know which ones are legit and which ones are terrorists?" Its easy, people. Its so fucking easy.
The terrorists will be the ones who start mass-killing Americans after they come to the USA! See how simple it is? So then we'll know which ones are bad guys. And then, we can put the bad guys in jail where they won't hurt anybody and we'll be safe.
