Yep, "Perkins v. Elg, 307 U.S. 325 (1939), was a decision by the Supreme Court of the United States that a child born in the United States to naturalized parents on U.S. soil is a natural born citizen" but only one of Barracks parents was a US citizen!<quoted text>
"And if you notice the article challenged George Romney's NBC status but both of George Romney's parents (Mitt's grandparents) were both U.S. citizens which makes George Romney a NBC."
Sorry, George was never the Republican candidate and his status was never established. Secondly, George Romney's parentage would have been immaterial if he had been born in the US. See Perkins v. Elg., and US v. Ark.
Similarly, McCain's parentage would have been immaterial if he had been born in the US.
Focus on the immaterial is the province of the fool.
And "United States v. Wong Kim Ark, 169 U.S. 649 (1898), is a United States Supreme Court case in which the Court ruled that practically everyone born in the United States is a U.S. citizen" only says US Citizen and never mentions "Natural Born Citizen".
To be a Natural Born Citizen BOTH parents had to be US citizens.