I have just returned from watching most of the Article 39(a), UCMJ, hearing. (I left as the last item on the table was a defense request for Alan Keyes and LtGen McInerney.)
To say that the military judge destroyed the defense arguments in detail would not be an overstatement. Although the military judge did politely characterize the defense arguments as an “erroneous view of the law.”
The authority to issue orders does not depend on the qualifications of the President, any suggestion that it does is an erroneous view of the law.