Just remember this when amnesty comes up, do we really want tens of millions of people loyal to a foreign government concentrated in the southwest?
If the US can back Jewish claims to Palestine (after it ceased to exist after 1700+ years) how are we going to tell other countries that their claims (substantially lesser time in historical past) are invalid??!! The world does not take our moralizing seriously because too many times the US is hypcritical. Example - Taiwan has the right to succeed from China but the Confederate States were crushed brutally. China does not allow the Christians to practice openly and freely, but a kid in US public schools can be suspended if he brings a Bible into the school. Worst we deal with Saudi Arabia as a close ally but they can kill Christians. George Washington understood the moral warp world outside of the US and warned us not to get into foreign entanglements. He was right. God gave us two ocean barriers, a large and rich land to build a prosperous and free society. Stay within it and we will come out ahead. Leave it and we will get bloodied and bankrupted.