All the evidence I've seen seems to show that the No Fly List is arbitrary and badly vetted. It's ridiculous that it's being used to prevent people from traveling just because someone with the same, or a similar, name is on the list. As it stands, the list allows the government to harass anyone wanting to fly, without any hope of redress or due process. Now they are considering expanding use of the list to restrict who can buy guns. Using such an unvetted source as a way to deny American citizens free exercise of their Constitutional rights is beyond ridiculous, it's downright scary.
What's next? Refusing to give people driver's licenses if their name is on the list?