House GOPers Call for Napolitano Ouster
The memo cautioned that returning veterans who had trouble readjusting could "lead to the potential emergence of terrorist groups or lone wolf extremists capable of carrying out violent attacks."
While meeting with reporters on Thursday, Napolitano brushed off calls from some House Republicans for her to resign.
"I've already acknowledged that the extremist report that came out, well-intentioned as it was, was not well written. It did not pass our own internal processes. It should not have gone out in the form it did," said Napolitano. "And I've already apologized to veterans who were offended by that."
Napolitano said she will meet with the leadership of the American Legion, the national veterans group, on Friday.
Told that some Republicans think an apology is insufficient, Napolitano said, "I just would say to that: That's what they're going to get."
Grover Norquist, the president of the conservative Americans for Tax Reform group and author of "Leave Us Alone," responded to the DHS report by saying that Democrats should be worried about a political threat, not a security threat.
"It's a little bit frightening, and I think the politicians are right to be a little bit scared at how much they've stirred up a hornet's nest," said Norquist.
ABC News' Jason Ryan contributed to this report.