The Power Canons

73 Pages Posted: 3 Apr 2016 Last revised: 7 Oct 2017

Date Written: May 1, 2017


With three recent decisions – UARG v. EPA, King v. Burwell, and Michigan v. EPA – the Supreme Court has embraced a new trio of canons of statutory interpretation. When an agency charged with administering a long-existing statute asserts regulatory authority it has not previously used, in a matter having large economic and political significance, its interpretation will be met with skepticism. When an agency charged with administering an ambiguous statutory provision answers a question of large economic and political significance, one central to the statutory regime, and the Court believes the agency is not an expert in the matter, the Court may ignore the agency's interpretation altogether. And when an agency charged with administering a statute interprets an ambiguous provision to permit the agency not to consider costs before deciding to regulate, the agency will likely lose as having acted unreasonably. In each case, the Court took interpretive power from an administrative agency, power that would normally have been the agency's due under Chevron, and kept it for itself. And in each case, the Court's seizure of power aligned with its basic distrust of an active administrative state. I call the new canons the "power canons."

The power canons are striking enough for their rearrangement of the Chevron-dominated relationship between the courts and administrative agencies. However, they are even more noteworthy, and troubling, for their rearrangement of the relationship between the courts and Congress. The power canons are clear-statement principles, directed as much to Congress as to the agencies; they instruct Congress to speak clearly if it wants to make certain substantive results available under a statutory regime. And they require clear congressional language only to enable an ambitious regulatory agenda, not to disable one. This asymmetry is the sign that they mask a judicial agenda hostile to a robust regulatory state.

This judicial agenda has no basis in law. The power canons are not based on a careful analysis of what Congress likely meant in employing broad or ambiguous language in the relevant statutes. Nor do they come from judicial precedent. Although two of the canons draw upon previous decisions alluding to the significance (in two different senses) of an interpretive question as a factor in statutory interpretation, the recent cases both resuscitate that factor after intervening cases had signaled its demise and add new, distinctive parameters. The last canon, on regulatory costs, is utterly new.

Although the power canons do not align with the relevant statutes or prior judicial precedents, they are consistent with the expressed dissatisfaction of some justices with the scope and power of the modern administrative state. In recent years, Justices Alito, Kennedy, and Thomas, and Chief Justice Roberts, have all written or joined opinions decrying the growth of the administrative state and the tension between it and constitutional provisions on the separation of powers. No Court majority, however, has been assembled actually to strike down any law based on the broadest constitutional theories that these justices have espoused. By trimming Congress's power to enable robust regulation through broad or ambiguous language, however, the power canons may achieve much of what the justices have been unable to achieve directly through their constitutional views. Thus, one way to understand the power canons is as applications of an exceedingly strong version of the constitutional avoidance doctrine, one that would permit judicial amendment of statutes even in the absence of an articulation of the constitutional problem the statutory adjustments are designed to avoid. Viewing the power canons in this way does not redeem them.

Some scholars have suggested that interpretive canons may be justified by appealing to broader norms. Borrowing from Professor William Eskridge's normative framework for evaluating interpretive canons, I assess the power canons according to whether they promote the rule-of-law values of predictability and objectivity, democratic values, and widely shared public values. I conclude that the power canons undermine rather than promote these values. The power canons' unpredictability and subjectivity upset rule-of-law values. Their blunt approach ignores details of statutory history and design and thus their application drives a wedge between legislative objectives and judicial outcomes. They undermine the public values of separation of powers and deliberation by enlarging the judicial power at the expense of the legislative and executive branches and by pushing hard against one side of the debate over the scope of regulatory power.

The Supreme Court should renounce the power canons.

Keywords: Chevron deference, administrative law, statutory interpretation, environmental law, Supreme Court

Suggested Citation

Heinzerling, Lisa, The Power Canons (May 1, 2017). William & Mary Law Review, Vol. 58, 2017, Available at SSRN:

Lisa Heinzerling (Contact Author)

Georgetown University Law Center ( email )

600 New Jersey Avenue, NW
Washington, DC 20001
United States

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