A Minnesota county attorney may pursue charges against federal officers for alleged misconduct during an immigration crackdown in the Minneapolis area. The prosecutor says Monday her office is already investigating 17 incidents in the county, including a Jan. 21 case where Border Patrol official Greg Bovino threw a smoke canister at protesters, and a Jan. 7 arrest near a high school where officers used chemical irritants while students and staff were in the area. Her office may also sue the federal government for blocking requests for evidence in her investigations into the deaths of Renee Good and Alex Pretti. The Department of Homeland Security responded saying that states cannot prosecute federal officers.