Why bother going for an oral argument for an appeal on a case that was a loser right out of the starting gate. Schense can better use that time to help clients who will legitimately help with their defense, rather that ask him to argue:
"I'm an ambassador!" [of a fake nation]
"I've been exonerated of my felonies by the highest court in the world!" [a fake court]
"Someone planted the rifle!" [with no evidence provided what ever]
"The second amendment shall not be infringed!" [failing to realize the "well regulated" part allows Congress to pass gun laws]
"Use the tax code definition of a rifle to prove it's not a rifle!" [failing to realize the criminal statue will define what a rifle is for the statute]
"The name in all CAPS is a juristic person, not a live man!" [just outright stupid]
And other such pseudolegal chicanery...