The Constitution is not "fluff." As for evidence, you're the one who can't cite any court cases that say the citizenship of someone born in America to an American citizen is trumped by a foreign law. It's the last position I'd expect to see on a conservative forum, but ever since Obama was elected, I've seen it expressed here time and time again. It's simply astounding.
Correct, but if US law, via the meaning of "natural born citizen" requires that both parents be Citizens at the time of birth, then it only matters that BHO Sr was not a citizen, it doesn't matter what nation he was a citizen of. Nor does it matter if that other country claims his offspring as a citizen either. It's the lack of US citizenship that counts. The non citizen parent could be be stateless and the offspring would still not be natural born. They could and would under the 14th amendment, be a citizen, with some exceptions.