Article 8 of the UCMJ. He should be court marshaled
“Any commissioned officer who uses contemptuous words against the President, the Vice President, Congress, the Secretary of Defense, the Secretary of a military department, the Secretary of Transportation, or the Governor or legislature of any State, Territory, Commonwealth, or possession in which he is on duty or present shall be punished as a court-martial may direct.”
At any rate, I agree he should be court-martialed and stripped not only of his rank, but forfeit all benefits accrued. I wouldn't mind seeing him as a year or two visitor at Fort Leavenworth.
As a former US Army NCO/Commissioned Officer I am bitterly embarrassed by this individual's wearing of the uniform at any time, anywhere.
And article 92 and 88. This little weasel should be sitting in the brig.