The Rachel Maddow show on MSNBC reports a DHS document that contradicts Donald Trump’s idea even for a scaled-down travel ban (without Iraq), saving that country of origin generally has little connection to terrorism.
Most terror attacks or attempts came from people who had been in the United States a long time, or form their adult kids. The document is here and the report on Maddow’s show is here.
The report would suggest that a sensible terror policy would focus on interfering with radicalization, possibly putting more responsibility on social media companies. But much of the radicalization followup occurs on the Dark Web, run by overseas interests and not reachable to search engines and normal social media companies.
The DHS report(s) are based on unclassified documents.
In the meantime, it seems like Jeff Sessions must have watched “From Russia With Love” at least once.
CNN has an important report here, of a DHS study showing more than half of terror attempts coming from people born in US, maybe 2/3 for ISIS.