[RegulatorCountry]

Subsequent legislation has made retroactive qualifications for citizenship that are broader than the law of 1952. Under present law he would without a doubt be considered a US citizenship without need for naturalization ( the most likely reading of “natural born”).

No ex-post facto laws, buwaya. It's in the Constitution. No effect whatsoever upon the specific, Constitutional term "natural-born citizen," let alone the requirement for such in order to be eligible for the office of President.

[buwaya]

Er, I think you are misunderstanding the nature of ex-post facto here.

Lets put it this way - if a fellow in Kenya walked up to a US consulate today with a birth certificate and other documents showing that he had been born in the city of Mombasa in 1961 to an 18-year-old US citizen, would he have to get into the immigration line with everyone else ?

Thats the way a court would decide.