Final answer:
The largest state law enforcement agency varies from state to state in the United States.
Step-by-step explanation:
The largest state law enforcement agency would depend on the state in question. However, if we are considering the United States as a whole, there is no unified national police force. Each state has its own law enforcement agencies, and the largest one would vary from state to state. You can research the individual law enforcement agencies of each state to determine which one has the most sworn officers.