Tribe is of the school of Constitutional Law which has wreaked havoc on the American Culture. It put the will of the judge and pop culture as the basis for decision making.
Cruz, on the other hand, is inclined to the originalist or original meaning school.
Americans are convinced that only those two schools are possible approaches to Constirutional questions.
However, the more traditional and more judicious approach is to be found in the intent of the drafters as modified under the umbrella of the Natural Law, which is the underlying basis of the drafting of the Constitution. Such an approach would allow for the internet to be protected by the First Amendment. It would not see gay marriage as a right. It would most likely have done away with slavery, but not approved of affirmative action which would have been seen as unjust to innocent people of later generations.
The natural law always raises it head if the face of injustice. It was the basis on which the Nurenberg trials were held.
We ignore it at our own harm.
But the originalist meaning is all natural law. And that is what Ted Cruz is all about.