Overview

• On March 9, 2025, a French researcher traveling to a Houston conference was denied entry to the U.S. after border officials found messages critical of Trump on his devices.
• The messages, described by U.S. officials as 'hateful and conspiratorial,' led to the confiscation of the researcher's electronic devices and his deportation the following day.
• The French government has condemned the incident, emphasizing the importance of academic freedom and freedom of opinion, while acknowledging U.S. sovereignty over border control.
• U.S. Customs and Border Protection defended its actions, stating that inspections are conducted under longstanding immigration laws and are not politically motivated.
• The case has raised concerns about privacy, the treatment of foreign researchers, and the broader impact of U.S. policies on international scientific collaboration.