Ok but American planes fly in and out of the US. Also domestic flights have no limitations on foreigners. Unless you are saying that it's ok to have terrorists onboard, as long as they're not trying to terrorize America.
> Worrying about terrorism is extremely foolish.
I'm not debating the merit of the list or terrorism policy. But if you have a list in the first place then it's illogical to say its size should be relative to the number of successful terrorist attacks on planes. Not without more information about the distribution of terrorism inclination in the population.