The international investment regime provides generous protections for foreign investors against adverse legal changes in host states, and unusually strong procedural rights to enforce those protections in investor-state dispute settlement (ISDS). Scholars have observed that the regime enables corporate capital accumulation and raises the costs of climate action, potentially deterring states from adopting ambitious climate policies. Building on this literature, we locate a key source of these concerns in the asymmetric treatment of state and investor behavior in ISDS, which allows investors to depict themselves as innocent victims of “unfair” and “unforeseeable” “political” processes, despite themselves being active political players and sophisticated political risk managers—a tactic we call feigned victimization. This tactic is employed by fossil fuel companies to achieve capital accumulation and climate obstruction goals. We illustrate our argument through an empirical case study of TC Energy’s US$15 billion ISDS claim against the United States in relation to the Biden Administration’s revocation of a permit required to construct the Keystone XL oil pipeline. Our case study also illustrates a method by which states can expose feigned victimization tactics by investors and incorporate evidence of this into their legal defenses in ISDS.