Law enforcement here in the US is much different than in Canada. The RCMP have nationwide authority, which police in the US do no not have.
Back in the early 20th century when states were forming state law enforcement agencies, some were called "State Patrol" or "Highway Patrol" instead of "State Police", to somewhat restrict their authority.
Here in Ohio the state patrol pretty much stick to state highways and interstates. However in Kentucky, where they are "State Police", they may be the only police in areas with little or no law enforcement and will respond to any/all calls for police service.