“WHAT CHUMPS!” wrote Chief Justice Roberts, dissenting in Arizona State Legislature v. Arizona Independent Redistricting Commission.

Just over a century ago, Arizona became the second State in the Union to ratify the Seventeenth Amendment. That Amendment transferred power to choose United States Senators from “the Legislature” of each State, Art. I, §3, to “the people thereof.” The Amendment resulted from an arduous, decades-long campaign in which reformers across the country worked hard to garner approval from Congress and three-quarters of the States.

What chumps! Didn’t they realize that all they had to do was interpret the constitutional term “the Legislature” to mean “the people”? The Court today performs just such a magic trick with the Elections Clause. Art. I, §4. That Clause vests congressional redistricting authority in “the Legislature” of each State. An Arizona ballot initiative transferred that authority from “the Legislature” to an “Independent Redistricting Commission.” The majority approves this deliberate constitutional evasion by doing what the proponents of the Seventeenth Amendment dared not: revising “the Legislature” to mean “the people.”