“…Research has established that humans have a psychological preference for fairness and prefer decisions that minimize inequity in payoffs (Fehr & Schmidt, 1999 ). Concerns over relative contributions and shares are particularly pronounced in the distributional settings of IO membership and trade agreements, where asymmetrical provisions can not only shift the power balance among participant countries, but, equally important, raise concerns over its equity and equality of the outcome (e.g., Gowa & Mansfield, 2004 ; Yeung & Quek, 2022 ). Hence, Brutger and Rathbun show, when evaluating trade relations, Americans’ attitudes are often driven by a sense of fairness, albeit an egoistic one, according to which they value equal distribution of concessions and benefits, but oppose agreements that leave their home country relatively behind ( 2021 ).…”