More than 1,500 mathematicians have signed a petition to boycott the International Congress of Mathematicians (ICM) in Philadelphia this July unless it moves outside the United States. The boycott targets the field's most prestigious gathering, where the Fields Medal is awarded and major mathematical breakthroughs are announced.

The petition cites recent U.S. military actions, visa suspensions affecting 75 countries, and the presence of ICE agents as incompatible with the ICM's goal of fostering international unity among mathematicians. The movement gained momentum after the French Mathematical Society announced it would skip the event, citing concerns about violence and travel restrictions for colleagues from Global South countries.

This boycott follows the ICM's 2022 decision to move its congress out of Saint Petersburg after Russia's invasion of Ukraine. Critics argue that holding the event in the U.S. represents a double standard. With the conference approaching and organizers remaining silent, mathematicians face a pivotal moment in deciding whether to exercise their collective influence on global academic collaboration.