Peter Bergen and David Sterman wrote for CNN about Trump's new travel ban, citing their report Jihadist Terrorism 16 Years After 9/11:
On Sunday, President Donald Trump issued a proclamation updating his administration's travel ban policy to apply American travel restrictions to citizens of eight countries: Chad, Iran, Libya, North Korea, Somalia, Syria, Venezuela and Yemen.
As with two earlier versions of the travel ban, this most recent version would not have prevented a single death from jihadist terrorism in the United States since 9/11.
According to research by New America, 13 militants have committed an act of deadly violence inspired by jihadist ideology in the United States since 9/11. None of them came from any of the total of 10 countries that have been included in the three iterations of the Trump administration's travel ban.