7-21-2302. Scope of part. (1) This part shall in no way affect any person, firm, partnership, or corporation with a commercial rating who maintains a permanent place of business in Montana.

(2) Nothing contained in this part is intended to operate so as to impair, abridge, or interfere with the right of any incorporated municipality within this state to enact local laws or ordinances dealing with the subject of this part, provided that such municipality shall not impose any license fees in excess of twice the amount provided herein for county license fees.

(3) Nothing contained in this part is intended to operate so as to interfere with the power of the United States to regulate commerce between the states, as such power is defined by the supreme court of the United States.