Actually Tribe has said that if litigated, he believes Cruz would be found eligible, but it is not "settled law" as Cruz has said. And there are plenty of respected legal authorities who state that Cruz is not eligible. The point is that it needs to be litigated.
Is Ted Cruz a 'natural born Citizen'? Not if you're a constitutional originalist.
Tribe--Under Ted Cruz’s own logic, he’s ineligible for the White House
If you recall, Tribe and Ted Olson were commissioned in 2008 by the Senate to determine if McCain was eligible to run. Based on the opinion, the Senate issued a non-binding resolution finding McCain eligible thru both jus solis and jus sanguinis. Tribe/Olson also gratuitously added a statement finding Obmama eligible because he was born in Hawaii.
The way I was taught in school...back in the days when they actually taught this stuff...is that, to be an NBC, you had to be born on US soil (or US entity), of two US citizen parents. That seems to disqualify Cruz.
Rubio, I understand, was born on US soil but his parents were not US citizens at the time. Seems like that would be a disqualification too yet, not much is being said about it.
Obviously, based on the way I was taught, Obama should not have been eligible either. I don't recall a big firestorm over that. So now, a precedent has been set but is it constitutional?