President Obama doesn’t get enough credit for his accomplishments. I know this because he often tells us it is so. I happen to agree that he doesn’t get enough credit. No, not for slowing the rise of the oceans or healing the planet, as he immodestly claimed he would, even before taking office. He has succeeded handsomely, though, in living up to his vow to be a transformative president, like Ronald Reagan, and not an incremental one in the Bill Clinton mold. Mr. Obama has accomplished many changes—they just aren’t the ones we were waiting for.

Mr....