Trump wants to protect 1.8 million Dreamers from deportation -- and not just DACA recipients but an extra million who weren't even registered. Also, he wants to give them a path to citizenship -- in exchange for wall funding, an end to chain migration, and the elimination of the visa lottery. About this, the far left and the far right are both freaking out. That tells you it's a sound proposal that may be worth a shot. Here's what you need to know.