When in doubt, consult an expert.
When the Supreme Court's liberal wing decided to grant habeus corpus to terrorists, they failed to do some in-depth research on the recipients of their insipidity.
Thomas Joscelyn gives one example in THIS excellent article.
He shows that the aftermath of Boumedienne may be deadly to our efforts against terror. Specifically, Joscelyn, Giuliani's former senior campaign advisor on terrorism, describes the case of Huzaifa Parhat. Read his account and see if you agree that Boumedienne is already leading to the regret expressed by Scalia.