Since our own dumb law made US citizens of the kids born here, deportation is not an option. Even when (if) we fix the law those already here can't be ejected on an ex-post-facto basis.
No, but their parents should be deported—and parents should not be able to dump their kids in a different country from their own and still maintain custody of them.
BTW, it doesn’t really even matter—Cruz wouldn’t deport even the parents, so there’d be no question raised as to the kids.