Trump and His Aides Keep Justifying the Entry Ban by Citing Attacks It Couldn't Have Prevented

International Security's “Terrorism in America After 9/11” project was cited in the Washington Post:

Since 2001, every deadly jihadist attack inside the United States was carried out by a U.S. citizen or legal resident, according to data collected by New America, a Washington-based nonprofit group.

New America tracked nearly 400 cases involving people charged with jihadist terrorism or a related crime. In nearly half of these cases, people involved were born in the United States, while nearly a third involved naturalized citizens or permanent residents.

“Far from being foreign infiltrators, the large majority of jihadist terrorists in the United States have been American citizens or legal residents,” the group notes in a report on its findings. It adds: “In addition about a quarter of the extremists are converts, further confirming that the challenge cannot be reduced to one of immigration.”