; and (ii) shall cease to have effect upon an Act of Congress disapproving such designation. (C) Freezing of assets Upon notification under paragraph (2)(A)(i), the Secretary of the Treasury may require United States financial institutions possessing or controlling any assets of any foreign organization included in the notification to block all financial transactions involving those assets until further directive from the Secretary of the Treasury, an Act of Congress, or a court order. (3) Record (A) In general In making a designation under this subsection, the Attorney General shall create an administrative record. (B) Classified information The Attorney General may consider classified information in making a designation under this subsection. Classified information shall not be subject to disclosure for such time as it remains classified, except that such information may be disclosed to a court ex parte and in camera for purposes of judicial review under subsection (c). (4) Period of designation (A) In general A designation under this subsection shall be effective for all purposes until revoked under paragraph (5) or (6) or set aside pursuant to subsection (c). (B) Review of designation upon petition (i) In general The Attorney General shall review the designation of a significant transnational criminal organization under the procedures set forth in clauses (iii) and (iv) if the designated organization files a petition for revocation within the petition period described in clause (ii). (ii) Petition period For purposes of clause (i)— (I) if the designated organization has not previously filed a petition for revocation under this subparagraph, the petition period begins 2 years after the date on which the designation was made