U.S. Presidents & The Natural-born-citizen Clause

[Minimalist]

 I don't personally know exactly what legally defines "natural born"

Neither does anyone else.  That's the problem.

Ted Cruz was born in Canada and had to renounce his Canadian citizenship.  Something that Canada seems fine with....

http://trailblazersblog.dallasnews.com/2...cruz.html/

Calgary residents say the U.S. can keep Canadian-born Ted Cruz

But...

https://www.washingtonpost.com/opinions/...story.html

Donald Trump is actually right about something: Sen. Ted Cruz (R-Tex.) is not a natural-born citizen and therefore is not eligible to be president or vice president of the United States.

The Constitution provides that “No person except a natural born Citizen . . . shall be eligible to the Office of President.” The concept of “natural born” comes from common law, and it is that law the Supreme Court has said we must turn to for the concept’s definition. On this subject, common law is clear and unambiguous. The 18th-century English jurist William Blackstone, the preeminent authority on it, declared natural-born citizens are “such as are born within the dominions of the crown of England,” while aliens are “such as are born out of it.”