Note that the Constitution mandates a ‘NATURAL BORN citizen’ for POTUSA. Note that the 14th Amendment addresses the ‘citizen’ only. My take is that the 14th Amendment is merely adjunct to the original Constution as that document also at places speaks only to ‘citizen’. The Founding Fathers made a ‘natural born citizen’ the bedrock for citizenship and used it only as the requirement for POTUSA. Obama is not eligible as POTUSA because the Founding Fathers were intelligent enough to understand there was a need for setting allegience at bedrock for POTUSA for the new Nation. The cases of Arthur and Obama just ‘shows to go’ that the best laid plans of man can be usurped by dishonorable persons intending to do such.
“All from other lands, who by the terms of [congressional] laws and a compliance with their provisions become naturalized, are adopted citizens of the United States; all other persons born within the Republic, of parents owing allegiance to no other sovereignty, are natural born citizens. Gentleman can find no exception to this statement touching natural-born citizens except what is said in the Constitution relating to Indians.” (Cong. Globe, 37th, 2nd Sess., 1639 (1862))