Eisenhower solved the problem for quite a while, they caught the illegals (wet backs back then) and flew them down to the middle of mexico not drop them off the other side of the border..make them trave 500 miles to get back to the border...
But apparently Eisenhower messed up. He was supposed to round up the “illegals”, and put them in gas chambers.
I seem to remember another country who decided there were people in their country who didn’t belong, and that it would be OK to kill them for the good of the nation.