Idaho Code § 5-239: Actions barred in another state.

When a cause of action has arisen in another state or territory, or in a foreign country, and by the laws thereof an action thereon can not there be maintained against a person by reason of the lapse of time, an action thereon shall not be maintained against him in this state, except in favor of one who has been a citizen of this state and who has held the cause of action from the time it accrued.