Only One-Third of Proposed Regulatory Obligations Survive to the Final Rule, by Andrew Leahey

Key Takeaways

• Only 32% of proposed obligations survive to final rule
• Treasury rules retain 57% obligations; Interior only 19%
• Final rules add ~6,700 new obligations, none proposed
• Deontic drift below 1%; modal strength rarely changes
• Notice‑and‑comment acts as filter, not incremental editor

Summary

A new study of Federal Register rulemaking shows that only about one‑third of proposed regulatory obligations survive unchanged into final rules. Across 954 paired proposals, 32% of obligations persist, while the majority are removed or rewritten, and final rules introduce roughly 6,700 new obligations. Survival rates vary dramatically by agency—Treasury retains 57% of its proposals, whereas Interior retains just 19%. The analysis also finds minimal deontic drift, with less than 1% of surviving obligations changing their modal force.

Pulse Analysis

The rulemaking landscape is undergoing a data‑driven reassessment, thanks to a novel dataset that extracts sentence‑level obligations from over half a million Federal Register documents. By treating each deontic instruction—what an actor must, may, or must not do—as the unit of analysis, researchers can now quantify how the notice‑and‑comment process reshapes regulatory burdens. The study’s metrics, such as obligation survival rate and deontic drift, expose a stark reality: proposed rules are far less stable than policymakers assume, with two‑thirds of obligations disappearing before final publication.

Agency behavior further complicates the picture. Treasury’s relatively high 57% survival rate suggests a more conservative drafting approach, perhaps reflecting pre‑proposal vetting or lower political stakes. In contrast, Interior’s 19% rate indicates extensive post‑proposal revision, likely driven by technical complexity and heightened stakeholder engagement. These disparities underscore that the comment period’s impact is not uniform; it varies with regulatory domain, agency culture, and the underlying policy arena. Practitioners must therefore calibrate their comment strategies to the specific agency’s historical editing patterns.

For regulated entities and advocacy groups, the implications are profound. Investing resources to comment on provisions that are statistically unlikely to survive may yield diminishing returns, while the influx of novel obligations in final rules raises concerns about transparency and preparedness. The study invites a rethinking of compliance planning, urging firms to monitor not just the headline of a proposed rule but the granular obligations that endure. As the empirical lens sharpens, stakeholders can better navigate the regulatory process, aligning their legal, operational, and lobbying efforts with the actual dynamics of rule evolution.