39 U.S.C. § 3631
Section 3631 · Applicability; definitions and updates
Amended 1 time on record
Applied in 3 court decisions — leading case United Parcel Serv., Inc. v. Postal Regulatory Comm'n (2018)
Most recently applied in United Parcel Service, Inc. v. Postal Regulatory Commission (March 2024)
How often courts cite this section
Court decisions citing this, by year.Markers show enactment, consequential amendments, and circuit splits over this section — watch for a citation surge after a change or a disagreement. The dip in the last several years is a data-coverage gap, not a real trend — our corpus holds fewer opinions from the most recent years, so recent citations are undercounted.
(a) Applicability.—This subchapter shall apply with respect to—
(1) priority mail;
(2) expedited mail;
(3) bulk parcel post;
(4) bulk international mail; and
(5) mailgrams;
subject to subsection (d) and any changes the Postal Regulatory Commission may make under section 3642.
(b) Definition.—For purposes of this subchapter, the term “costs attributable”, as used with respect to a product, means the direct and indirect postal costs attributable to such product through reliably identified causal relationships.
(c) Rule of Construction.—Mail matter referred to in subsection (a) shall, for purposes of this subchapter, be considered to have the meaning given to such mail matter under the mail classification schedule.