31 CFR § 210.1 - Scope; relation to other regulations.
This part governs all entries and entry data originated or received by an agency through the Automated Clearing House (ACH) network, except as provided in paragraphs (a) and (b) of this section. This part also governs reclamations of benefit payments.
(a) Federal tax payments received by the Federal Government through the ACH system that are governed by part 203 of this title shall not be subject to any provision of this part that is inconsistent with part 203.
(b) ACH credit or debit entries for the purchase of, or payment of principal and interest on, United States securities that are governed by part 370 of this title shall not be subject to any provision of this part that is inconsistent with part 370.