CHRIS CUOMO, CNN ANCHOR: -- the conservative leaning think tank, the Cato Institute of the more than 3 million refugees admitted from 1975 to the end of 2015, 20 were terrorists amounting to 0.00062 percent. Of those 20, only three attacks were successfully carried out, three people lost their lives. So how many Americans have been killed by citizens of these countries? None. From 1975 through 2015, Cato research says none. That same figure from Saudi Arabia, 2,369. From the UAE, 314, Egypt, 162. Why? All of these countries were home to the terrorists who carried out the 9/11 attacks and none was targeted by this ban. Also not on the list countries where President Trump appears to have business interests. So finally, let's take a look beyond all the heated rhetoric. How big is the actual threat here at home? Let's be honest. That's what this is about, fear, right? According to Cato, the chance of an American being killed by a foreign-born terrorist is 1 in 3.6 million. Looking specifically at refugees that statistic jumps to 1 in 3.64 billion with a "b." The 2015 data from the Centers for Disease Control and Prevention shows us you're actually more likely to die being struck by lightning, being hit by a bus, falling out of your bed than you are of dying in a terror attack. The number in that study, by the way, that Cato did does not include the 14 killed in the December 2015 shooting at San Bernardino, however, if you put that number in it's still lower than the other causes of death listed -- Alyson.</s>ALISYN CAMEROTA, CNN ANCHOR: Thank you very much for that important reality check, Chris. President Trump shaking up the national security council elevating the role of his chief strategist, Steve Bannon. One former national security adviser calls this move, quote, "stone cold crazy." Our panel is next.
Reality Check: Refugees And Terrorism