What's that got to do with this, @Oceander ?
Because it's always followed by "Geez, if we just enforced the immigration laws everything would be sunny and bright" - and then with the rejoinder that "we cannot call ourselves a nation of laws if the immigration laws are not wholly enforced."
Well, if that second bit is the litmus test for being a nation of laws, then we aren't a nation of laws so long as even one law, no matter how pedestrian, is not wholly enforced, and that includes speeding laws and parking laws.
This sort of nonsense is anathema to actual grown up, rational, immigration law and immigration reform.