The FBI is investigating Minnesota residents who are using Signal group chats to share information about federal immigration agents' movements, with the goal of determining whether any residents have put agents 'in harm's way'. The investigation has raised concerns about free speech implications, as the chats are used to track and document immigration enforcement activities. The FBI director claims that the investigation aims to balance the rights guaranteed by the First and Second amendments with potential violations of federal law. The Signal chats have been used by activists, parents, and neighborhood-watch members to warn families about immigration enforcement activities.