The decision of the Attorney General not to object to a submitted change or to withdraw an objection is not reviewable. The preclearance by the Attorney General of a voting change does not constitute the certification that the voting change satisfies any other requirement of the law beyond that of section 5, and, as stated in section 5, ``(n)either an affirmative indication by the Attorney General that no objection will be made, nor the Attorney General's failure to object, nor a declaratory judgment entered under this section shall bar a subsequent action to enjoin enforcement of such qualification, prerequisite, standard, practice, or procedure.''