It does not matter in the slightest that Trump’s mother was born in Scotland, she became an American citizen a couple of years before Trump was born. Trump is just as natural born as any other natural born citizen. He meets all constitutional requirements for the office of president.
Just because I am the grandson of four and son of two natural born US citizens does not mean that I am any more natural born a US citizen than Cruz with two natural born grandparents and one natural born parent, or Trump with zero natural born grandparents and one natural born parent.