Eyal Weizman, the founder of the activist research studio Forensic Architecture, has been barred entry into the United States. Informed by email that his right to travel to the U.S. had been revoked, he learned in a subsequent embassy visit that an algorithm had identified a security threat that “could be related to something he was involved in, people he had been in contact with, places he had visited, hotels at which he had stayed, or a pattern of relations among those.” These unsubstantiated claims have left him unable to attend his retrospective exhibition at Dade College’s Museum of Art and Design in Miami, that opens next week.