Well, I'm unsure that such is a good idea ("get[ting] this straight at the Supreme level") — we've seen just how far the USSC is willing to go to rationalize federal overreach/unlawful-dictates, which is not a new problem: Wickard, Raich, Kelo, ACA, and Schenck pop immediately to mind.
I am convinced that the Obama/McCain race was put forward to weaken the Constitution's mandate for natural born citizenry, and am suspicious that the Romney/McCain was more of the same.* — I'm not saying that Cruz is ineligible, as I believe that NBC is about the parents [both of them] rather than the location, which the 14th amendment conflates with its clause about birth. It is from the route of the 14th Amendment that I see how the courts could do (and do) much damage to the Constitution: just look at the magic of incorporation and how something that specifically constrains the congress is held binding on the States via the magic of incorporation! (Rather than simply applying the text as-is.)
That's why I am leery of the whole thing.
* Also, do you want to bet that after Obama's term was over and the new guy installed, that he would have come out as being born in Kenya and the new-guy [Romney] would issue a Pardon?
I am leery of the outcome. But the alternative is endless argument as the Dems and GOP push it further each election in the future. It has to have an official settlement one way or the other. If so, we can move on.