I take it that you agree the Constitution has no place in an American court of law. How interesting.
He's certainly free to appeal on constitutional grounds to an appellate court. It appears his lawyer didn't even attempt to dispute the charges through motion work. What they were trying to do is tamper with the jury. The jury does NOT make rulings of law, it makes findings of facts. To ask otherwise would make you an enemy of the state and a shameful human being.