20 SHELBY COUNTY v. HOLDER Opinion of the Court the Voting Rights Act of 1965 must be judged with reference to the historical experience which it reflects.”). But history did not end in 1965. By the time the Act was reauthorized in 2006, there had been 40 more years of it. In assessing the “current need[ ]” for a preclearance system that treats States differently from one another today, that history cannot be ignored. During that time, largely because of the Voting Rights Act, voting tests were abolished, disparities in voter registration and turnout due to race were erased, and African-Americans attained political office in record numbers. And yet the coverage formula that Congress reauthorized in 2006 ignores these developments, keeping the focus on decades-old data relevant to decades-old problems, rather than current data reflecting current needs. The Fifteenth Amendment commands that the right to vote shall not be denied or abridged on account of race or color, and it gives Congress the power to enforce that command. The Amendment is not designed to punish for the past; its purpose is to ensure a better future. See Rice v. Cayetano, 528 U. S. 495, 512 (2000) (“Consistent with the design of the Constitution, the [Fifteenth] Amendment is cast in fundamental terms, terms transcending the particular controversy which was the immediate impetus for its enactment.”). To serve that purpose, Congress—if it is to divide the States—must identify those jurisdictions to be singled out on a basis that makes sense in light of current conditions. It cannot rely simply on the past. We made that clear in Northwest Austin, and we make it clear again today. C In defending the coverage formula, the Government, the intervenors, and the dissent also rely heavily on data from the record that they claim justify disparate coverage. Congress compiled thousands of pages of evidence before