You need to reread the speech Cruz gave upon declaring his candidacy. That is the one in which he laid out the case for electing him as POTUS. There is nothing in it about sovereignty. He does not speak of the never-ending horde of foreign invaders, pouring across the borders and then raping, robbing, murdering and otherwise preying upon the US and her citizens. He yaks some fluff about the American Dream while pretending the entire country isn’t on the point of collapse.
You really do need to reread it. It is profoundly revealing.