” All Presidents born before July 4, 1776, were born British “natural born subjects.”
Neither Arthur nor Obama were “natural born Citizens” at the time of birth.
Arthur was born to an alien father who also made his U.S. citizen mother an alien.
Obama was born to a non-U.S. citizen father who never became a U.S. citizen and, being here only on a temporary student visa, was never even an immigrant.
President James Buchanan, who had an Irish father, Woodrow Wilson, who had an English mother, and Herbert Hoover, who had a Canadian mother, were “natural born Citizens.”
President Thomas Jefferson, whose mother was born in England, and Andrew Jackson, whose parents were both born in Ireland, were grandfathered to be eligible to be President.
Chester Arthur , who burnt all of his personal records just prior to his death , had for years lied about his birth . At the time of birth his father was an 18 yrs old Irishman and not a citizen until Chester was 15 .
The Constitution does not in words say who shall be natural-born citizens.
http://puzo1.blogspot.com/2011/02/citizenship-status-of-our-44-presidents.html