The International Security program's "Terrorism in America" data were cited in the Washington Post:
"The broader point the ban's opponents make is that singling out immigrants, tourists and refugees based on their country of origin will do little to keep the United States safe, while badly damaging the nation's reputation abroad.
'Far from being foreign infiltrators, the large majority of jihadist terrorists in the United States have been American citizens or legal residents. Moreover, while a range of citizenship statuses are represented, every jihadist who conducted a lethal attack inside the United States since 9/11 was a citizen or legal resident,' concluded a recent report by the New America Foundation. 'In addition about a quarter of the extremists are converts, further confirming that the challenge cannot be reduced to one of immigration.'"