Al Franken, many argue, should now resign. He should resign immediately because there are credible accusers (another emerged Wednesday), and because the behavior alleged is sufficiently abhorrent that there is simply no basis to defend him. In this parade of unilateral disarmament, Trump stays, Conyers goes, Moore stays, Franken goes.

Is this the principled solution? By every metric I can think of, it’s correct. But it’s also wrong. It’s wrong because we no longer inhabit a closed ethical system, in which morality and norm preservation are their own rewards. We live in a broken and corroded system in which unilateral disarmament is going to destroy the very things we want to preserve.

You can talk about gradations of harm—what Franken is accused of still pales next to child predation—but even that is a trap. The point is, as Jennifer Rubin notes Tuesday, that “one party has adopted a zero-tolerance position (with Sen. Al Franken, Democrat of Minnesota, set to go before the ethics committee) and another party opens its arms to people it believes are miscreants.” Rubin feels confident that becoming the party of alleged sexual abusers will harm the GOP in upcoming elections (did she live through last November?). My own larger concern is that becoming the party of high morality will allow Democrats to live with themselves but that the party is also self-neutering in the face of unprecedented threats, in part to do the right thing and in part to take ammunition away from the right—a maneuver that never seems to work out these days. When Al Franken, who has been a champion for women’s rights in his tenure in the Senate, leaves, what rushes in to fill the space may well be a true feminist. But it may also be another Roy Moore. And there is something deeply naïve, in a game of asymmetrical warfare, and in a moment of unparalleled public misogyny, in assuming that the feminist gets the seat before it happens.