Olivier Douliery/picture-alliance/dpa/AP Images Associate Justice Neil Gorsuch J ustice Neil Gorsuch’s first Supreme Court opinion won’t earn much notice in his biographies. The unanimous decision reads more like a grammatical lesson, scrutinizing one line of text in a decades-old statute. But if you have ever been harassed in the middle of the night by a debt collector, or been threatened with tax liens or court summonses or even bodily harm, you should understand what Gorsuch and his fellow justices did on Monday: They gave some of the worst bottom-feeders in the economy a free pass to break the law. The case, Henson v. Santander , looks pretty innocuous at first reading. But the Roberts Court’s deference to big business, and lack of experience about the real-world legislative implications of their legal debating club, turned this decision into a huge win for financial predators. It’s now up to Congress to fix what Gorsuch and friends broke. But with the current group in charge, don...