His Politico op-ed, here:

With this week’s historic decision, the U.S. Supreme Court did not actually strike down Section 5 of the Voting Right Act (VRA), which mandates advance federal approval, or pre-clearance, of changes to election procedures in jurisdictions under the act’s coverage. . . . But the justices made Section 5 inoperable by invalidating the formula in Section 4 that decides just what states and communities qualify for such aggressive oversight. And by making the future of preclearance depend on this thoroughly gridlocked Congress, the high court’s blow to Section 5 is fatal in practice — even if not in theory.

More here.