The Oversight Board circumvents First Amendment concerns because it is appointed by the industry, in this case Facebook, and the firm voluntarily follows its rulings. Board members should always favor free expression but, at the same time, are not bound to what have become often dogmatic formulas regarding First Amendment precedent. Thus, in the board’s first major ruling Wednesday, it chastised the firm’s process and very likely left an opening for Trump to return to the space. Now that we’ve established the board has power, it must be expanded to cover the entire social media ecosystem. As it stands, its...