One of the main things that has led to greater difficulty with enforcing federal immigration law in Minnesota is the lack of cooperation from the state and local officials. AdvertisementWhat that means is that jails aren't notifying ICE (Immigration and Customs Enforcement) when they are releasing people, so that ICE can pick them up from the safety and security of the jail. “Since the Republican National Convention was held in St. Paul back in 2008, Minnesota law enforcement has undergone extensive training in mobile field force configurations and crowd management for major events. Frey said:The job of our police is to keep people safe, not enforce fed immigration laws. He's right that they don't "enforce" immigration laws, but the problem is they are fighting against their enforcement.