Idaho constitution
Article XI
Section 10

No
foreign corporation shall do any business in this state without having one or more
known places of business, and an authorized agent or agents in the same, upon
whom process may be served; and no company or corporation formed under the
laws of any other country, state, or territory, shall have or be allowed to exercise or
enjoy, within this state any greater rights or privileges than those possessed or
enjoyed by corporations of the same or similar character created under the laws of
this state.