States to compel any State or political subdivision to satisfy the obligations set forth in this section. Such an action shall be heard and determined by a court of three judges under section 2284 of title 28, United States Code. In any such action, the court shall provide as a remedy that implementation of any voting qualification or prerequisite to voting, or standard, practice, or procedure with respect to voting, that is the subject of the action under this subsection be enjoined unless the court determines that— (1) the voting qualification or prerequisite to voting, or standard, practice, or procedure with respect to voting, is not a covered practice described in subsection (b)