Corporate bylaws are the new leading edge of a decades-long struggle between shareholders and managers over the allocation of decision-making authority in public companies. Bylaws are the only method by which shareholders can unilaterally restrict the powers and discretion of the board. Yet the scope of this statutory authority remains notoriously uncertain. Corporate law scholars generally agree that there is a limited domain in which shareholders can restrict managerial authority, but disagree on the appropriate boundary. The Delaware Supreme Court recently confronted this issue for the first time in CA, Inc. v. AFSCME Employees Pension Plan, but that decision is doctrinally problematic (indeed, internally inconsistent) and, in any event,...