When Simon & Schuster dropped Senator Josh Hawley’s book a day after the Jan. 6 riot at the Capitol, the news caused an explosion of attention, condemnation and praise.

Amid the cries of censorship and cancel culture, however, the way the publisher backed out of the deal got relatively little attention. Simon & Schuster invoked part of its contract typically referred to as a morals clause, which allows a publisher to drop a book if the author does something that is likely to seriously damage sales.

Widely detested by agents and authors, these clauses have become commonplace in mainstream publishing over the last few years. The clauses are rarely used to sever a relationship, but at a time when an online posting can wreak havoc on a writer’s reputation, most major publishing houses have come to insist upon them.