Miss. Code § 65-1-507
The Mississippi Transportation Commission may appoint employees of the contiguous states as duly authorized and empowered enforcement officers of the Mississippi Transportation Commission for the enforcement of tax, weight, size and load, equipment, safety and all other laws, rules and regulations of this state and the Mississippi Transportation Commission relating to vehicles entering into, exiting, or traveling upon the highways of this state, and may allow employees of the Mississippi Transportation Commission to accept similar positions or appointments with any contiguous state or the appropriate agency or department of such state and to enforce the rules, regulations and laws of such state or its agencies or departments.
Miss. Code § 65-1-507