Iowa Code § 147.48: Termination of reciprocal agreements.

If the requirements for a license in any state with which this state has a reciprocal agreement are changed by any law or rule of the authorities in that state so that such requirements are no longer substantially equivalent to those existing in this state, the agreement shall be deemed terminated and licenses issued in that state shall not be recognized as a basis of granting a license in this state until a new agreement has been negotiated.