; (II) the alien fails to comply with the conditions of release or to continue to satisfy the conditions described in subparagraph (A); or (III) upon reconsideration, the Secretary determines that the alien can be detained under subparagraph (B). (ii) Applicability This section shall apply to any alien returned to custody pursuant to this subparagraph as if the removal period terminated on the day of the redetention. (F) Review of determinations by secretary A determination by the Secretary under this paragraph shall not be subject to review by any other agency. . 5. Severability If any of the provisions of this Act, any amendment made by this Act, or the application of any such provision to any person or circumstance, is held to be invalid for any reason, the remainder of this Act, the amendments made by this Act, and the application of the provisions and amendments made by this Act to any other person or circumstance shall not be affected by such holding. 6. Effective dates (a) Apprehension and detention of aliens The amendments made by section 3 shall take effect on the date of the enactment of this Act. Section 236 of the Immigration and Nationality Act, as amended by section 3, shall apply to any alien in detention under the provisions of such section on or after such date of enactment. (b) Aliens ordered removed The amendments made by section 4 shall take effect on the date of the enactment of this Act. Section 241 of the Immigration and Nationality Act, as amended by section 4, shall apply to— (1) all aliens subject to a final administrative removal, deportation, or exclusion order that was issued before, on, or after the date of the enactment of this Act; and (2) acts and conditions occurring or existing before, on, or after such date of enactment.