Our immigration system is a mess... apparently. If you want open borders, it is terrible that so many people who could be working legally instead have to be here illegally. If you want tighter controls, it is terrible that so many people our law should have excluded instead are here, with apparently no intention of doing anything about it. So from both sides of the debate, the situation looks terrible...
But what if there is a third side? What if there is a side that wants lots and lots of immigrants in the country, but wants them here with as little legal standing as possible, so they are always fearful of being turned in and deported? So they will work lots of hours for low pay and no benefits and not complain?
When you have an apparent mess on your hands that won't clear up, year after year after year, it is often useful to ask, "Is there someone for whom this is not a mess at all, but the ideal situation?"
Our screwy tax code is another case where this applies.