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.
Historical practice confirms that birth on soil that is under the sovereignty of the United States, but not within a State, satisfies the Natural Born Citizen Clause. For example, Vice President Charles Curtis was born in the territory of Kansas on January 25, 1860 — one year before Kansas became a State. Because the Twelfth Amendment requires that Vice Presidents possess the same qualifications as Presidents, the service of Vice President Curtis verifies that the phrase “natural born Citizen” includes birth outside of any State but within U.S. territory. Similarly, Senator Barry Goldwater was born in Arizona before its statehood, yet attained the Republican Party’s presidential nomination in 1964. And Senator Barack Obama was born in Hawaii on August 4, 1961 — not long after its admission to the Union on August 21, 1959. We find it inconceivable that Senator Obama would have been ineligible for the Presidency had he been born two years earlier.
Essentially, when you read the entire opinion, you can be a "natural born citizen thru jus sanguinis OR jus solis. You don't need both. That is Tribe and Olson's opinion. SCOTUS has yet to rule on it in connection with eligibility to be President. We desperately need a decision on this issue given the changing demographics of this country fueled by immigration.