Nothing keeps the agencies from working with ICE or other federal agencies on criminal matters. “Our proximity to the international border makes communication and coordination with our federal immigration and law enforcement partners critical. Butler warned of the consequences of terminating the agreements with federal law enforcement. Three law enforcement officials have suggested they would not abide by the law. “One of the most important lessons from that tragic day was that communication and cooperation between local, state, and federal law enforcement agencies are essential to protecting our homeland,” he said.