U.S. House of Representatives v. Mnuchin, 379 F. Supp. 3d 8

After the 2019 Consolidated Appropriations Act appropriated $1.375 billion for border fencing, President Trump declared a national emergency and announced plans to reallocate additional funds (Treasury Forfeiture Fund, 10 U.S.C. §284, and §2808) to build a border wall.
The House sued seeking to enjoin the Administration from spending certain funds under §§284 and 2808, alleging violations of the Appropriations Clause and the APA; it did not challenge the emergency declaration or the Treasury Forfeiture Fund expenditure.
The Administration moved to dismiss for lack of Article III standing, arguing the House asserts a generalized institutional grievance that courts should not adjudicate and that political remedies remain available.
The House sought a preliminary injunction; the Court confined its inquiry to whether the House established a concrete, particularized Article III injury (the first prong of standing).
The Court applied an "especially rigorous" standing analysis governing interbranch disputes and reviewed historical practice, precedent, and availability of political remedies.

Issue	Plaintiff's Argument	Defendant's Argument	Held
Whether the House has Article III standing to sue for an institutional injury to its Appropriations power	The House says the Administration's use of §§284/2808 to spend funds for a wall usurps Congress’s appropriations authority and inflicts a concrete institutional injury warranting judicial relief	The Administration says the House alleges a generalized institutional grievance; courts should not resolve interbranch policy disputes and political remedies remain available	Denied: House lacks the requisite concrete, particularized injury for Article III standing
Whether historical practice and available institutional remedies permit judicial intervention	House contends precedent (and its unique institutional role) supports its suit to vindicate Article I spending power	Administration points to long historical practice of resolving such disputes politically, not judicially, and to mechanisms (veto override, new appropriations, hearings, oversight) that the House can use	Held that historical practice and available political tools weigh against judicial intervention; this is not a "complete nullification" requiring court review

Raines v. Byrd, 521 U.S. 811 (1997) (individual members lack standing to sue over generalized institutional dilution of legislative power)
Arizona State Legislature v. Arizona Indep. Redistricting Comm'n, 576 U.S. 787 (2015) (a legislature can have standing when a voter initiative would nullify its core institutional function)
Coleman v. Miller, 307 U.S. 433 (1939) (legislators had standing to challenge vote nullification in the context of state ratification and Supreme Court appellate jurisdiction)
Bowsher v. Synar, 478 U.S. 714 (1986) (limits on congressional ability to use courts to police execution of laws)
Lujan v. Defenders of Wildlife, 504 U.S. 555 (1992) (Congress cannot convert generalized public interest in law enforcement into judicially cognizable individual rights)
Marbury v. Madison, 5 U.S. (1 Cranch) 137 (1803) (judicial role is to decide rights of individuals, not to supervise executive discretion)
United States v. Windsor, 570 U.S. 744 (2013) (caution against turning political disputes into perpetual judicial supervision)