This was the most coherent part of the proposed reg...that's what's scary. I read through the mess twice.

But the upshot is this: If DHS decides that you're a suspicious character, they can prevent you from entering or leaving the U.S. by plane. Considering the number of people on the no fly list that are there eroneously, some of them not exactly unknowns, and you could potentially have a lot of people stuck with no recourse for appeal.

What's even worse, is that this is not legislation. It's a proposed regulation, which means that at no point does Congress get to vote on it. Right now they're taking comments, but if it still goes through...expect a lawsuit.