1. Short title This Act may be cited as the Northern Border Regional Commission Reauthorization Act of 2023 . 2. Regional commissions modifications (a) Membership of commissions Section 15301(b)(2)(C) of title 40, United States Code, is amended— (1) by striking An alternate member and inserting the following: (i) In general An alternate member ; and (2) by adding at the end the following: (ii) State alternates If the alternate State member is unable to vote in accordance with clause (i), the alternate State member may delegate voting authority to a designee, subject to the condition that the executive director shall be notified, in writing, of the designation not less than 1 week before the applicable vote is to take place. . (b) Decisions of commissions Section 15302 of title 40, United States Code, is amended— (1) in subsection (a), by inserting or State alternate members, including designees after State members ; and (2) by striking subsection (c) and inserting the following: (c) Quorums (1) In general Subject to paragraph (2), a Commission shall determine what constitutes a quorum for meetings of the Commission. (2) Requirements Any quorum for meetings of a Commission shall include— (A) the Federal Cochairperson or the alternate Federal Cochairperson; and (B) a majority of State members or alternate State members, including designees (exclusive of members representing States delinquent under section 15304(c)(3)(C)). . (c) Administrative powers and expenses of commissions Section 15304(a)(9) of title 40, United States Code, is amended by striking maintain a government relations office in the District of Columbia and . (d) Meetings of commissions Section 15305(b) of title 40, United States Code, is amended by striking with the Federal Cochairperson and all that follows through the period at the end and inserting the following: with— (1) the Federal Cochairperson