; and (2) by inserting after subsection (e) the following: (f) (1) If a person who has been naturalized participates in any act described in paragraph (2), the Attorney General is authorized to find that, as of the date of such naturalization, such person was not attached to the principles of the Constitution of the United States and was not well disposed to the good order and happiness of the United States at the time of naturalization, and upon such finding shall set aside the order admitting such person to citizenship and cancel the certificate of naturalization as having been obtained by concealment of a material fact or by willful misrepresentation, and such revocation and setting aside of the order admitting such person to citizenship and such canceling of certificate of naturalization shall be effective as of the original date of the order and certificate, respectively. (2) The acts described in this paragraph are the following: (A) Any activity a purpose of which is the opposition to, or the control or overthrow of, the Government of the United States by force, violence, or other unlawful means. (B) Engaging in a terrorist activity (as defined in clauses (iii) and (iv) of section 212(a)(3)(B)). (C) Incitement of terrorist activity under circumstances indicating an intention to cause death or serious bodily harm. (D) Receiving military-type training (as defined in section 2339D(c)(1) of title 18, United States Code) from or on behalf of any organization that, at the time the training was received, was a terrorist organization (as defined in section 212(a)(3)(B)(vi)). . (b) Effective date The amendments made by subsection (a) shall take effect on the date of the enactment of this Act and shall apply to acts that occur on or after such date. 205. Use of 1986 IRCA legalization information for national security purposes (a) Special agricultural workers Section 210(b)(6) of the Immigration and Nationality Act ( 8 U.S.C. 1160(b)(6) ) is amended— (1) by striking Attorney General each place such term appears and