Protect and maintain the highways and interstates from unlawful commerce.
Maryland State Police was created in 1921.
The hierarchy generally goes: Federal (FBI, CIA, etc) State police/agencies County sheriff Municipal/City police
Oregon State Police was created in 1931.
Virginia State Police was created in 1932.
Indiana State Police was created in 1933.
Massachusetts State Police was created in 1865.
California State Police was created in 1887.
Connecticut State Police was created in 1903.
Illinois State Police was created in 1922.
Maine State Police was created in 1921.
Louisiana State Police was created in 1922.
Michigan State Police was created in 1917.