There are two sorts of false positives. There's the false positive that stems from when the person has the same name as someone who's on the list, and that's the discussion we've been having as of late. That's where a redress system—“I'm not really that person”—is effective. There are also false positives in the sense of a person who is the person the government has targeted, but who feels they've been wrongfully listed. At that point, there's an appeal process, but the appeal process is done in a secret environment where there's no special advocate. One of the recommendations is to have a special advocate who can provide an adversarial challenge in that appeal process.
On December 5th, 2017. See this statement in context.