Such naivety on display here, I am alarmed for HN. National security isn't blanket grounds for doing anything. There are limits to president's and executives and even legislatures authority. Arbitrarily nothing can be done in our system. Unless US government probably demonstrates to the public that this measure is required, such a ban cannot be condoned.

They can do just anything, once they convinced you it's "because national security". And it seems that people are very easily convinced.

But should it?