I believe it is a court prerogative to determine the definition. The senate cannot define it or clarify because none of them were around when the constitutional article was written. That could be better for Cruz because McConnell would hang him out to dry as he is already doing.
They are not called Supreme for no reason... It was the Supremes that found the hidden Constitutional right to kill the unborn... It was the Supremes that divined a right for same sex marriage... from a TEXAS case.. And the people yawn.