Hillary Clinton has officially joined the hue and cry for repealing the “Cadillac tax,” a controversial but important Obamacare provision slated to take effect in 2018.

Despite the cutesy vehicular nickname, this tax is actually on high-cost health insurance plans (those costing at least $10,200 for a single person and $27,500 for families). It’s no wonder that Clinton, like other poll-sensitive or perhaps misguided politicians, has come out against it: This tax, like so many other taxes, has proved hugely unpopular, repelling an unholy alliance of unions, businesses and the public at large.