On Sept. 8, the Homeland Security Department's inspector-general reported that U.S. Citizenship and Immigration Services mistakenly granted citizenship to at least 858 individuals who were under deportation or removal orders.
On Tuesday, Homeland Security Secretary Jeh Johnson told Congress the actual number is "somewhere around" 750. But Johnson could not say how many of them were from countries known to be havens for terrorists.
"Were any of them from special interest countries?" Sen. Ben Sasse, a member of the Senate Homeland Security Committee, asked Johnson.
"Not off hand," Johnson replied. "I -- I can't -- I can't give you that breakdown offhand. It is a -- I suspect it is a knowable fact, which we can provide you."
Johnson said a process to "de-naturalize" those people is now under way. "And we're going to continue to do that."