It is not a matter of following it. Obama was never challenged by the GOP and the Tribe/Olson opinion was requested by the Senate to determine McCain’s eligibility. If it was settled law re the definition of natural born citizen, then why ask for a legal opinion?
Obama was on the senate. Tribe was on his campaign staff. You don't see an obvious conflict of interest?? And let's not forget, Obama didn't release his alleged COLB until after Hillary conceded the primary and several months after the McCain resolution was passed. The GOP didn't know he was going to forge his birth credentials. McCain sure as hell wasn't going to challenge him after a quid pro quo.