MysteriousJackalope and bonbonours are correct. This won't make us safer, it will make us less safe.
More people have been killed by toddlers with guns than immigrants from these countries and yet Trump is all for guns.
For those who keep rerunning the 9/11 lie, please educate yourselves. They came from the exact countries Trump has exempted from the ban not because he has business dealings in those countries, honest
If all those who have suddenly started caring about countries that bar Israelis from travelling want to start a petition, then let me know, I'll probably sign it, but your silence up until this point has been deafening, and I very much doubt Israel would be amused by your using them as a talking point in this debate. It looks like virtue signalling and in fact all the Jewish groups I've seen/spoken to are appalled at what the Trump administration is doing, because it makes them less safe too and his timing absolutely sucked.
This is categorically a ban on Muslims, Guiliani has explicitly stated as much. Bannon refused to allow people with green cards or visas for which they have been vetted to have exemption. As bonbonbours says, we are at more risk of home grown terrorists, many of whom will have found their "brotherhood" within the prison system because of their vulnerability. Death cults are the same as all cults and look for the vulnerable and disaffected and draw them in. This is not to say that they are then not culpable by any means.
This move won't stop terrorists. It will cause them.