Keep in mind :)
Consider the exact words of what Trump proposed. Trump was asked by a reporter, "Would you try to get military commissions to try U.S. citizens?" To which he replied, "Well, I know that they want to try them in our regular court systems, and I don't like that at all. I don't like that at all. I would say they could be tried there, that would be fine."
https://www.cnn.com/2016/08/16/opinions/trump-military-tribunals-american-citizens-mcenany/index.html