Trump Uses 2002 Law Authorizing War Against Saddam to Justify Detaining an American in 2018

More details are emerging about the unnamed American ISIS ‘fighter’ who surrendered to U.S. allies, the thumb drive he had with him—and the law being used to keep him locked up.
In The News Piece in The Daily Beast
Department of Justice
Feb. 16, 2018

Joshua Geltzer was quoted in the Daily Beast on the U.S. citizen currently detained in Iraq who is believed to have joined and fought for ISIS:

As Judge Tanya Chutkan continues to hear the so-called habeas corpus case, now titled Doe v. Mattis, all eyes are on not just how she’ll rule, but how far she’ll go.
“It’s potentially putting before a federal judge the legal theory that underpins the continuing—and critical—counter-ISIS campaign,” said Joshua Geltzer, a Justice Department attorney and National Security Council official in the Obama administration.
“While I happen to have confidence in that theory, the government rarely is eager to put such a high-stakes issue up for grabs in litigation.”