The Club World Cup brings a certain level of excitement for soccer fans. But some are feeling uneasy about the level of security at match venues. U.S. Immigration and Customs Enforcement agents doubling as security for major sporting events isn’t uncommon.

Immigration and Customs Enforcement (ICE) is also expected to be at the games, according to local Miami news outlet NBC 6 South Florida and The Athletic. ICE issued a warning to attendees and said people should carry proof of their legal status, NBC 6 reported.