Suppose Trump had used campaign funds to pay off these women. Does anyone much doubt that many of the same people now after Trump for using corporate funds, and not reporting them as campaign expenditures, would then be claiming that Trump had illegally diverted campaign funds to “personal use”? Or that federal prosecutors would not have sought a guilty plea from Cohen on that count? And that gets us to a troubling nub of campaign finance laws: Too often, you can get your target coming or going.

Yes, those payments were unseemly, but unseemliness doesn’t make something illegal. At the very least, the law is murky about whether paying hush money to a mistress is a “campaign expense” or a personal expense. In such circumstances, we would not usually expect prosecutors to charge the individuals with a “knowing and willful” violation, leading to criminal charges and possible jail time. A civil fine would be the normal response.