The Brief Border Patrol agents chased a cyclist in downtown Chicago after he taunted them and shouted that he was not a U.S. citizen. Border Patrol agents chased a cyclist through downtown Chicago on Sunday after he taunted them and repeatedly claimed he was not a U.S. citizen. Border Patrol presence in ChicagoDig deeper:Dozens of armed federal immigration agents patrolled several of Chicago's busiest tourist areas on Sunday. Border Patrol agents could be seen walking along Wacker Drive, Michigan Avenue, Millennium Park, the Riverwalk and River North. JB Pritzker has scheduled a 3 p.m. press conference Monday to denounce the federal presence in the state.