; or (B) require the Postal Service to establish a classification, rate, or fee for any postal service except as provided in subsection (f). . 2. Nondiscriminatory rates for delivery of inbound international mail generally Subsection (c) of section 407 of title 39, United States Code, is amended to read as follows: (c) (1) Except as provided in subsection (f), the Governors shall, in accordance with the provisions of chapter 36, establish reasonable and equitable classes of mail and reasonable and equitable rates of postage and fees for the transportation and delivery within the United States of documents and goods received from other countries. Such classifications, rates, and fees shall be regulated by the Postal Regulatory Commission in the same manner as comparable domestic classifications, rates, and fees, and shall be available to users of domestic postal services under the same terms and conditions as provided to foreign post offices and other entities tendering documents and goods from other countries to the Postal Service. (2) The classifications, rates, and fees established by the Postal Service under this subsection and subsection (d) shall not discriminate between documents or goods received from other countries based on the country of origin, the nationality of the sender, or the ownership or governmental designation of the entity tendering the documents or goods to the Postal Service. . 3. Preferential rates for inbound noncommercial mail from developing countries Section 407 of title 39, United States Code, is amended by adding at the end the following: (f) (1) Pursuant to subsection (b), the Secretary of State may conclude a treaty, convention, amendment, or other intergovernmental agreement that requires the Postal Service to provide preferential classifications, rates, or fees for the transportation and delivery within the United States of documents and goods received from other countries in accordance with this subsection. (2) No classification, rate, or fee established under this subsection