In July 2023, the International Maritime Organization (IMO) resolved to reduce international shipping’s greenhouse gas emissions to net zero “by or around, i.e., close to” 2050. There is a long-running debate about whether the sector should decarbonize and how it could do so in a way that is equitable for states and the shipping industry. This Article is the first to normatively define shipping’s fair share of the overall climate mitigation burden using principles of international environmental law.

The U.S. Environmental Protection Agency’s (EPA’s) enforcement program has long been the backbone of environmental enforcement in the United States. That program may now be bound for dramatic change. This Article analyzes the threats posed to the Agency’s program by the U.S. Supreme Court’s forthcoming decision in Securities and Exchange Commission v. Jarkesy, in which three constitutional questions presented cut to the core of administrative enforcement.