There shall be no requirement that an agent resident in Nebraska sign or countersign a policy of insurance covering a subject of insurance resident, located, or to be performed in the state, except that if the laws or regulations of another state require a signature or countersignature by an agent resident in that state on a policy of insurance written by a nonresident agent or nonresident broker of such state, then any policy of insurance written by an agent resident of that state licensed as a nonresident agent in Nebraska covering a subject of insurance resident, located, or to be performed in Nebraska shall be signed or countersigned in writing by an agent resident in Nebraska. No policy of insurance shall be deemed invalid due to the absence of the required signature or countersignature. If the laws or regulations of another state require an agent resident in such state to retain a portion of the commission paid on a like policy of insurance written, countersigned, or delivered by such agent in such state at the request of a nonresident agent or nonresident broker of such state, then the agent resident in Nebraska who signed or countersigned a policy of insurance written by a resident of such state licensed as a nonresident agent in Nebraska covering a subject of insurance resident, located, or to be performed in Nebraska shall retain an equal pro rata portion of any commission on such policy of insurance.