Proposition 43 is a taxpayer protection measure that makes it harder to raise local special taxes, such as sales taxes, that are earmarked for a specific purpose. But Prop. 43 is nothing new. It merely restores what California voters have approved three times in the past but what was taken away by questionable court rulings. For years, California’s Constitution was understood to require two-thirds voter approval for local special taxes. That understanding began to change after the California Supreme Court’s 2017 decision in California Cannabis Coalition v. City of Upland. Although Upland concerned the timing of an initiative election, the...