28 C.F.R. § 51.10
Section 5 requires that, prior to enforcement of any change affecting voting, the jurisdiction that has enacted or seeks to administer the change must either:
(b) Make to the Attorney General a proper submission of the change to which no objection is interposed.
It is unlawful to enforce a change affecting voting without obtaining preclearance under section 5. The obligation to obtain such preclearance is not relieved by unlawful enforcement.
[52 FR 490, Jan. 6, 1987; 52 FR 2648, Jan. 23, 1987, as amended by Order No. 3262-2011, 76 FR 21243, Apr. 15, 2011]