God makes it pretty clear that aliens are people too...
I can buy that, but it also doesn't say kiss their asses or let them overrun your land. Those types the Lord usually says "Let no one be left alive lest they become a thorn in your side forever."
That edict was set down for whole races/societies that either inhabited places that God was giving to the Jews or that were harassing the Jews. He never said it about folks drifting on in for livelihood.