This letter provides the U.S. Government Accountability Office's (GAO) comments on the American Institute of Certified Public Accountants (AICPA) Auditing Standards Board's (ASB) proposed Statement on Auditing Standards, Communicating Internal Control Related Matters Identified in an Audit (Amends AU Section 325, Communicating Internal Control Related Matters Identified in an Audit). Overall, we support the proposed standard, which will conform the definitions of deficiencies in internal control within the ASB's auditing and attestation standards and align with the definitions adopted by other authoritative standard setting bodies.