George Santayana famously said that those who ignore history are doomed to repeat it. The same is true for judicial overreach. Those judges who yield to the temptation to counter policies that are not to their liking are likely to repeat such excesses of power. That is why the recent decision of U.S. District Judge Angel Kelley in Boston is so concerning. While there are good-faith reasons why some have objected to the removal of slavery and climate change exhibits from national parks and monuments, this is not about the merits but the authority to make such changes. Kelley’s recent...