Exactly! The Democrats will beat the birther drum like a tin drum. There are things they can do to keep him off the ballot in certain states while the litigation is slowly going through the court(s). This natural born citizen requirement has never been tested in court. The Democrats will drag Senator Cruz into this because they know it has been untested and the courts may be willing to test it.
And what makes you think they won’t do the same to Trump for his own dual nationality issues?
It's a wild parallel, for sure. But it pretty much describes Cruz's situation.