I guess that depends what he wanted. If he was just in town and needed to crash I'd probably let him in. If he said he got my address from a Paypal receipt and that glow niggers were after him and he needed a place to hide I'd wish him luck and shut the door.
I would do what I'm supposed to do in such situations: feed him, clothe him, and assist him in acquiring the forged documents and maps he would need to make it past the checkpoints and throw off the hounds, and then send him on his way to the next safe house in the chain. The children would be instructed to refer to him as Uncle Bubba from Toledo if the neighbors ask any questions. He looks like a Bubba.