Prohibition on parole The Secretary shall not parole in any alien who the Secretary, in the Secretary’s sole and unreviewable discretion, determines is a threat to national security or public safety, except in extreme exigent circumstances. (II) Extreme exigent circumstances defined In subclause (I), the term extreme exigent circumstances means circumstances under which— (aa) the failure to parole the alien would result in the immediate significant risk of loss of life or bodily function due to a medical emergency