A carrier, including a railway, steamship, motorboat, bus, or truck, is not liable to a consignor or consignee for damages for refusing to receive and transport, or refusing to deliver across or into an area protected by a quarantine, any fruit, plant, shrub, or other carrier of an insect pest or plant disease in violation of an order or rule of the department under this subchapter.
Tex. Agric. Code § 71.011