Peter Bergen and David Sterman write for CNN about terror attacks in the United States and Trump's travel ban:
Twelve terrorists have conducted deadly jihadist terrorist attacks in the United States since 9/11, killing a total of 94 people. None of those twelve -- who are all American citizens or legal residents -- emigrated from or were born into a family that emigrated from a country that is the subject of the Trump administration's travel ban.
Indeed, seven of the twelve terrorists are native-born U.S. citizens, hailing from cities such as Memphis and Arlington, Virginia, according to research by New America. And none of the 9/11 attackers came from any of the seven countries listed by Trump's executive order.
New America also found that three potentially serious attacks in the US since 9/11 that did not end up killing anyone were perpetrated by terrorists from countries that are covered by Trump's ban, two from Somalia and one from Iran.