Chevron Deference Is Gone. Where Is Kagan’s ‘Massive Shock’?

Loper Bright isn’t without costs, but it has benefits too—and it hasn’t proved particularly disruptive.

By John Chisholm. He is a trustee of the Santa Fe Institute and of the Foundation for Economic Education. Excerpts:

"When the Supreme Court ended Chevron deference, one of the most consequential doctrines in American law, Justice Elena Kagan warned in dissent that it would “cause a massive shock to the legal system.” Two years later, that hasn’t happened.

In Loper Bright Enterprises v. Raimondo (2024), a 6-3 majority discarded a 40-year-old rule for interpreting “ambiguous” statutes. Under Chevron v. Natural Resources Defense Council (1984), judges were obligated to defer any time a federal agency made a “reasonable” interpretation of the law. Loper Bright was the last in a series of cases in recent years narrowing Chevron. Now courts, not agencies, must determine the best reading of the law."

"Two economic lenses bring those benefits into focus, revealing why Loper Bright is the sounder doctrine in the long run."

"The first lens is regulatory stability."

"The second lens is cognitive diversity. Social scientist Scott Page has shown that for hard problems, a diverse group of decision-makers tends to outperform a homogeneous group of higher-ability experts."

"public debate and cost-benefit analyses systematically overweight Loper Bright’s costs—the same bias that drove Chevron’s centralization in the first place."

"Two years on, no “massive shock” has materialized. Agencies still prevail in most challenges. Empirical studies put their win rate at roughly 75% when courts applied Chevron and near 60% on established rules since Loper Bright."