If you do not like what is meant by a Constitutional clause, amend the Constitution.
McCain was granted citizenship by statute because those born in the canal zone were not citizens. Not by birth and not by the fact that their parents were citizens.
A law had to be created to grant them citizenship, which is not being a natural born citizen. You can not escape that fact.
So the only one between the two of us that has an obtuse nature in regards to this topic would be you in not recognizing reality.
Cruz is citizen by statute and not a naturally born US citizen. He is a Canadian. Born on Canadian soil with Canadian citizenship owing Canadian allegiance and has a Canadian birth certificate.