Judge Ruled Agency Rule Vacatur Unconstitutional
A federal judge has questioned the constitutionality of the vacatur remedy under the Administrative Procedure Act.
Updated on Sept. 30, 2026 in Law
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Judge Kathryn Mizelle of the Middle District of Florida issued an opinion declaring that the practice of vacating agency rules is likely unconstitutional. She argues that this remedy conflicts with the limited nature of judicial power established under Article III.
Why it matters
The opinion challenges a common legal practice by arguing that vacatur lacks Founding-era historical analogues and creates separation-of-powers issues. By interpreting Section 706 of the Administrative Procedure Act as a rule of decision rather than an equitable remedy, the ruling forces a re-evaluation of how courts oversee federal agencies.
The ruling specifically addresses the interpretation of Section 706 of the Administrative Procedure Act. The court analyzed whether this section grants judges the authority to set aside agency rules entirely versus acting through other legal mechanisms.
The players
Judge Kathryn Mizelle
She serves as a federal judge on the United States District Court for the Middle District of Florida.
The details
Judge Mizelle determined that vacating agency rules falls outside the scope of Article III judicial power. The court reached this conclusion by comparing modern vacatur practices against principles of appellate review and the original understanding of judicial authority.
Timeline
Judge Kathryn Mizelle issued the opinion on September 30, 2026.
Political Context
Opponents of this judicial perspective argue that vacatur is an essential tool for maintaining consistent regulatory standards across the nation. They contend that restricting this power could create a fragmented legal environment where agency rules are enforceable in some jurisdictions but not others.
If this interpretation is upheld on appeal, it could fundamentally alter how citizens and corporations challenge federal regulations. It may limit the ability of courts to grant immediate, nationwide relief against agency actions, forcing a more complex path for those seeking to overturn federal rules.
The takeaway
This ruling represents a significant challenge to the standard toolkit federal judges use to invalidate government regulations. Readers should anticipate a lengthy appellate process that could eventually reshape the boundaries of administrative law in the United States.
Further reading
For broader insight into ongoing regulatory battles in the courts, explore the Law section.
Source note: This article includes information reported by Reason.
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