Subject to the succeeding provisions of this paragraph, an amendment to a State plan shall take effect on one or more effective dates specified in the amendment.
Any plan amendment that is not described in subparagraph (B) and that becomes effective in a State fiscal year may not remain in effect after the end of such fiscal year (or, if later, the end of the 90-day period on which it becomes effective) unless the amendment has been transmitted to the Secretary.
The State shall conduct the program in accordance with the plan (and any amendments) approved under subsection (c) and with the requirements of this subchapter.
The Secretary shall establish a process for enforcing requirements under this subchapter. Such process shall provide for the withholding of funds in the case of substantial noncompliance with such requirements. In the case of an enforcement action against a State under this paragraph, the Secretary shall provide a State with a reasonable opportunity for correction before taking financial sanctions against the State on the basis of such an action.