; (2) the volume of mail described in paragraph (1)(A) that is presorted and an explanation of the effect of presorting such mail on the average delivery time and average delay time for such mail; and (3) the volume of mail described in paragraph (1)(B) that is presorted and an explanation of the effect of presorting such mail on the average delivery time and average delay time for such mail. (b) Prioritization audit (1) In general The Inspector General of the United States Postal Service shall conduct an assessment of the policies and practices of the United States Postal Service to determine if the United States Postal Service prioritizes the delivery of mail described in subsection (a)(1)(A) over mail that is the same class of mail and is not described in such subsection. (2) Report Not later than one year after the date of enactment of this Act, the Inspector General of the United States Postal Service shall submit to the Committee on Oversight and Accountability of the House of Representatives and the Committee on Homeland Security and Governmental Affairs of the Senate a report on the findings of the assessment required by paragraph (1). (c) Class of mail defined For the purposes of this section, the term class of mail means the items described in paragraphs (1) through (10) of section 3621(a) of title 5, United States Code, and the items described in paragraphs (1) through (5) of section 3631(a) of such title.