I think the plan is to issue the executive order, and once it is challenged have the Supreme Court rule on it. The argument can be made that the Constitution is murky on the subject and the Court has not weighed in on it.
The U.S. and Canada are the only developed countries in the world that offer birthright citizenship to tourists and illegal aliens. And no, Germany doesn't do it either.
For home protection I prefer the AA-12 automatic shotgun
With Dragon's Breath rounds (go to 1:45)