The balance of power among the Executive and Judicial branches of the U.S. government is undergoing a profound constitutional remapping. These current disputes, rooted in fundamental disagreements over the separation of powers and the scope of the rule of law, constitute major Constitutional Conflicts over US Executive Power. These conflicts are simultaneously redefining Presidential authority over independent agencies and restricting the federal courts’ ability to impose broad constraints on executive policy.
The structural changes involve three critical areas: the limitation of judicial remedies, the challenge to the President's removal power, and the overhaul of judicial review standards for agency actions.

Curtailing Judicial Remedies: Limiting Universal Injunctions

A significant shift occurred following the Supreme Court's decision in Trump v. CASA, Inc. (2025), which drastically curtailed the use of federal court injunctions against the executive branch. This ruling was precipitated by high-stakes conflicts, such as the dispute surrounding Executive Order No. 14160, "Protecting the Meaning and Value of American Citizenship".
Lower courts had previously issued "universal injunctions," barring the Executive Order from being applied to anyone, even nonparties in the lawsuit. The Supreme Court, in granting a partial stay of these universal injunctions, provided the following key holdings regarding federal equitable authority:

• Exceeding Equitable Authority: Universal injunctions likely exceed the equitable authority that Congress has granted to federal courts.
• Historical Pedigree Requirement: Equitable powers are confined to remedies traditionally accorded by courts of equity at the Nation’s founding, and the universal injunction lacks this historical pedigree, relying partly on the Judiciary Act of 1789 and the precedent set in Grupo Mexicano de Desarrollo, S. A. v. Alliance Bond Fund, Inc..
• Irreparable Harm to Executive: The Court determined that a universal injunction improperly intrudes on a coordinate branch, causing the Executive "irreparable harm" by preventing policy enforcement against nonparties.
• Relief Limitation: Injunctions must be limited to the extent necessary to provide "complete relief to each plaintiff with standing to sue".
  Dissenting Justices expressed concern that this ruling creates a "zone of lawlessness" or "Prerogative State" by allowing the Executive to violate the law against those who have not yet sued, thereby threatening the rule of law. Justice Sotomayor warned that restricting injunctions "kneecaps the Judiciary’s authority" to stop even patently unconstitutional policies. However, the decision left open the possibility that nationwide relief might still be available through Administrative Procedure Act (APA) suits if courts continue to universally "vacate (set aside) agency action".

Expanding Presidential Reach: The Removal Power Conflict

A second major constitutional clash involves the Trump Administration’s drive to consolidate power by challenging legal protections that maintain the independence of federal agencies. This conflict directly targets the constitutionality of "for-cause" removal restrictions. These statutory provisions prevent the President from firing the heads of certain independent agencies for mere policy disagreements.
The Administration's core goal is to overturn or narrow the 90-year-old precedent set in Humphrey’s Executor v. United States (1935), which originally upheld Congress's power to limit the removal of Federal Trade Commissioners (FTC).
The Administration asserts that:

• The President suffers "irreparable harm" when executive power is transferred to officers beyond his direct control.
• The President, under Article II, must have the authority to remove those wielding executive power "at will" to ensure political accountability.
  This question reached a critical point in the case Trump v. Slaughter, where the Supreme Court granted a stay of the reinstatement of a former FTC Commissioner and explicitly asked parties to brief the question of whether Humphrey’s Executor should be overruled. Critics warned that enabling the President to immediately discharge an FTC member risks transferring "government authority from Congress to the President, and thus to reshape the Nation’s separation of powers". Overturning this precedent would bring independent boards and regulatory commissions under the direct control and oversight of the President.

Restructuring Judicial Review: The End of Chevron Deference

Further straining the Executive Branch is the changing standard for judicial review of its administrative actions. The Supreme Court's decision in Loper Bright Enterprises v. Raimondo definitively overruled the doctrine of Chevron deference.
Chevron deference previously required courts to defer to an agency’s reasonable interpretation of an ambiguous statute. In the post-Chevron environment, courts must now exercise their "independent judgment" in deciding statutory meaning, reasserting the Judiciary's role as the "final authority on issues of statutory construction".
The main consequence for federal agencies is that they face a judiciary "much more willing to second-guess and ultimately invalidate their actions". Agencies are now advised to adapt their strategies by:

• Focusing on strengthening the persuasiveness of their arguments (known as Skidmore weight) by ensuring interpretations are grounded in thorough consideration and consistency.
• Characterizing their regulatory choices as fact-based policy decisions rather than purely legal interpretations to encourage more deferential judicial review under the arbitrary-and-capricious standard.

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Sources

• 24A884 Trump v. CASA, Inc. (06/27/2025).pdf - Supreme Court
• An Introduction to Judicial Review of Federal Agency Action | Congress.gov
• Defining the president's constitutional powers to issue executive orders | constitutioncenter.org
• Executive Enforcement of Judicial Orders | Federal Judicial Center
• Explained: Where SCOTUS' Nationwide Injunctions Ruling Leaves the Cases Against Trump - Democracy Docket
• How the Supreme Court Ruled Differently in Immigration and Criminal Justice Cases | www.themarshallproject.org
• Supreme Court Grants Emergency Motion on President's Removal Power.pdf - Congress.gov
• Supreme Court Overturning of Chevron Doctrine May Have Major Impacts on Executive Agency Actions, Including IHS Actions - NCUIH
• Supreme Court of the United States to Revisit Humphrey's Executor | natlawreview.com
• Supreme Court will weigh expanding Trump's power to shape agencies by overturning 90-year-old ruling | American Press
• TRUMP v. CASA, INC. | Supreme Court | US Law - Legal Information Institute
• The Post-Chevron World: Guidance for Policymakers - Governing For Impact
• Trump DOJ Says D.C. Circuit Got it Wrong in Temporarily Restoring Copyright Register | ipwatchdog.com
• Trump v. CASA, Inc. - University of Houston Law Center
• Trump v. CASA, Inc.: Supreme Court Limits Nationwide Injunctions - Congress.gov
• Trump v. Slaughter - Wikipedia
• Trump's firings of independent agency heads put 90-year-old Supreme Court precedent in crosshairs - CBS News
• What Loper Bright Enterprises v. Raimondo Means for the Future of Chevron Deference | www.yalejreg.com