I recently wrote about how Donald Trump's executive order seeking to curb mail-in voting is an attack on federalism and separation of powers. The Constitution gives states primary authority over election administration, subject to potential modification by congressional legislation. Today, in League of Women Voters v. Trump, a unanimous panel of the US Court of Appeals for the First Circuit rejected the Trump Administration's motion to stay the trial court injunction blocking implementation of the US Postal Service rule implementing Trump's order. Here is a key excerpt from the ruling:
Appellants have not demonstrated entitlement to a stay. Most prominently, appellants
have not made a strong showing that the district court erred in determining that the Final Rule is likely unlawful. The district court concluded, and we agree, that the Final Rule is likely a regulation of the manner of holding elections for members of Congress, which the Elections Clause of the Constitution assigns to the States and Congress, and not to an executive agency, such as the Postal Service, acting without congressional authorization.2 See U.S. Const. art. I, § 4, cl. Appellants seek to avoid the constitutional problem by denying that the Final Rule regulates the manner of holding elections. The district court charitably concluded that "[t]his denial rings hollow." League of Women Voters of Mass. v. Trump, Nos. 26-cv-11549, 26-cv-13917, 2026 WL 2620871, at *14 (D. Mass. Sep. 4, 2026). The title of the Final Rule is "Ballot Mail for Federal Elections," and the Final Rule explicitly and exclusively regulates election mail. 91 Fed. Reg. at 54966, 54990-92. It requires action by the States' "chief election official[s]" and its policy justification is "protect[ing] the integrity of federal elections…."To the extent that appellants argue that we should read statutes authorizing the Postal
Service to issue general postal regulations as supplying the necessary congressional authorization for the Final Rule, see 39 U.S.C. § 401(2) (authorizing USPS to make "such rules and regulations, not inconsistent with this title, as may be necessary in the execution of its functions"); id. § 401(10) (authorizing USPS to exercise "all other powers incidental, necessary, or appropriate to the carrying on of its functions or the exercise of its specific powers"); id. § 404(a)(1) (conferring on USPS the power "to provide for the collection, handling, transportation, delivery, forwarding, returning, and holding of mail, and for the disposition of undeliverable mail"), their argument likely fails. Appellants have not convinced us that it is likely that Congress would delegate constitutionally assigned tasks relevant to maintaining our electoral system to the Postal Service through the "wafer-thin reed" of a general grant of authority to manage the postal system. Biden v. Nebraska, 600 U.S. 477, 499 (2023). As appellees point out, Congress historically has been explicit in its exercise of authority under the Elections Clause when it seeks to displace the background assumption that the States will act as the primary regulator of elections. The general authority on which appellants rely here is far removed from that sort of specific congressional action.
