And SCOTUS (hopefully) is clamping down on this practice.
I think the full court will rule that Trump cannot use the Enemy Aliens Act in the absence of a declared war or an invasion by a foreign government.
http://tigerboard.com/boards/view.php?message=19454146
http://tigerboard.com/boards/view.php?message=19454306
http://tigerboard.com/boards/view.php?message=19454165