I’ve seen the distinction made between Federal citizenship and Constitutional citizenship before, but am uncertain as to how this distinction can be brought to bear, legally, upon the matter of Obama’s eligibility for the office of President, or the lack of it.
The Constitutional language regarding Presidential eligibility deals specifically with citizenship as then defined by the Constitution itself, and it can’t be construed any other way, not that I can see at least. The Legislative does not now, and never did, possess an enumerated power to enlarge the concept of naturalization to encompass Presidential eligibility.
The 14th Amendment dealt with the denial of citizenship to a certain class of people previously denied those rights and duties, former slaves. Those slaves became citizens by Amendment, not by birth. Their children, provided they were born in the several States to parents who were themselves citizens, were no doubt natural born citizens.
And so, that historical wrong was righted going forward. But, the 14th did not and cannot enlarge the rights and duties of citizenship to the exclusion of prior, specific language dealing with Presidential eligibility.
As far as I can see, it can't. I was just responding to a side-issue to El Gato.