Are we safer after the travel ban?

Trump’s recent travel ban’s on middle-east countries are suppose to make us safer, or will they? None of the countries that the 911 hijackers were from are on the travel ban. Fifteen were from Saudi Arabia, two were from the United Arab Emirates, one from Egypt and one from Lebanon. Could this be an error on the Presidents part or are these countries he has hotels in? I’m betting on the later.