Legislative rules and formal adjudications are always entitled to Chevron deference, while less formal pronouncements like interpretive rules and informal adjudications may or may not be entitled to Chevron deference.This blog entry concentrates on the claim that legislative rules are always entitled to Chevron deference. I claim that legislative rules are never entitled to Chevron deference because they are not interpretations of law; rather, legislative rules are the law, which means deference simply is not meaningful (just as courts do not defer to a statute). (Caveat I do note one possible nuance in that, since the scope of a legislative rulemaking authority delegation is an interpretation, it is possible that the scope could be subject to agency interpretation and deference to that interpretation, although I argue that even as to scope deference is not appropriate.)
I start with an acknowledgement that the judges and scholars often claim that legislative rules (which must be regulations) are entitled to Chevron deference or some variant thereof. E.g., Guedes v. Bureau of ATF, 920 F.3d 1, 17 (D.C. Cir. 2019), here (“Legislative rules generally Chevron deference,” quoting Nat'l Mining Ass'n v. McCarthy, 758 F.3d 243, 251 (D.C. Cir. 2014)); Kristin E. Hickman, Unpacking the Force of Law, 66 Vand. L. Rev. 465, 509 (2013) (“Where an agency employs notice-and-comment rulemaking under clear congressional authority to adopt rules and regulations, there is little doubt that the courts will treat the rule both as legislative and as eligible for Chevron deference.”). I could go on and on and on with variants of this claim.
Contrary to the this claim that legislative rules (regulations) are subject to Chevron deference, I claim that Chevron deference has a limited, if any, role for legislative rules. I address this and other similar claims about Chevron in my article. Townsend, John A., The Report of the Death of the Interpretive Regulation Is an Exaggeration (January 25, 2020). Available at SSRN: https://ssrn.com/abstract=3400489. Because my claim is laid out in more detail in the article, I just set forth here my reasoning for the claim.
1. Legislative rules which the APA commands be promulgated by notice and comment regulation and be prospective only are the law if within the scope of the legislative authority Congress delegated to the agency. Courts say that such legislative rules are like statutes and have the force of law.
2. Deference is a concept of deferring to an interpretation of ambiguous statutory text rather than deferring to the statutory text itself. So, too for a legislative rule which has the effect of a statute. Courts do not defer to statutes or their equivalent, legislative rules.
3. There is a theoretically possible place for Chevron deference to legislative rules in the agency's interpretation of the scope of the legislative rulemaking authority in the statutory text. (I discuss below in paragraph 7 why I don't think Chevron is applicable to the scope issue, so I flag here that that is the only possible application of Chevron to legislative rules.) Once it is determined that the legislative rule is within the scope, the legislative rule is the law and deference to the law is an oxymoron.
4, Of course, agencies can in other interpretive documents interpret the legislative rule and, if appropriate, have Chevron, Skidmore-type, or Auer deference apply to the interpretation of the legislative rule. But the legislative rule within the scope of the delegation is the law without any deference whatever. Indeed the concept of deference to the law -- whether the law is in a statute or a legislative rule -- is an oxymoron (except possible as to scope of the legislative authority delegation).