Complex sentence: In states where the Act has not been applied, BIA police respond to major crimes on reservations or pueblos, and the FBI joins in investigations of the most serious criminal matters such as murders or kidnappings.
Split into simpler sentences: In states where the Act has not been applied, Bureau of Indian Affairs (BIA) police respond to major crimes on reservations or pueblos. The FBI joins in investigations of the most serious criminal matters such as murders or kidnappings.