What is outside his "scope and powers?" If his decision ended in a child support order than he was within his power. Credibility of a party or witness is within his power to determine. What evidence he weighs most heavily is also within his powers. I think you need to have a lawyer review the decision to determine if indeed, the arbitrator did anything wrong or you just don't agree with the decision.
Answered on Jan 27th, 2015 at 5:12 PM