Reviewing individuals' social media to conduct ideological vetting has been a defining initiative of President Trump's second term. As part of that effort, the administration has proposed expanding the mandatory collection of social media identifiers. By linking individuals' online presence to government databases, officials could more easily identify, monitor, and penalize people based on their online self-expression, raising the risk of self-censorship. Most recently, the State Department issued a cable directing consular officers to review the social media of all student visa applicants for "any indications of hostility towards the citizens, culture, government, institutions or founding principles of the United States," as well as for any "history of political activism." This builds on earlier efforts this term, including the State Department's "Catch and Revoke" program, which promised to leverage artificial intelligence to screen visa holders' social media for ostensible "pro-Hamas" activity, and U.S. Citizenship and Immigration Services' April announcement that it would begin looking for "antisemitic activity" in the social media of scores of foreign nationals. At the border, any traveler, regardless of citizenship status, may face additional scrutiny. U.S. border agents are authorized to ... examine phones, computers, and other devices to review posts and private messages on social media, even if they do not suspect any involvement in criminal activity or have immigration-related concerns.