The
Chevron Framework that is so ubiquitous in administrative law now (see e.g.,
Law Finding (The Chevron Framework) and Fact Finding in Trials (Federal Tax Procedure Blog 1/19/19),
here) offers another interesting relationship to fact finding.
A standard formulation of the preponderance of the evidence fact finding standard is that, if the fact finder is in "equipoise" as to the existence of the fact, the party bearing the burden of persuasion loses on that fact. Equipoise is that point (stated in percentages at 50% belief in the existence or nonexistence of the fact) where the trier cannot decide with the comfort level of more likely than not (in percentages greater than 50% (existence) less than 50% (nonexistence)).
That same phenomenon conceptually occurs in determining a proper interpretation of a statute. If there is more than one reasonable interpretation of the statute, then presumably the most reasonable interpretation applies. The most reasonable interpretation could be the one that is more likely than not the correct one. In the percentages, it is the interpretation that the court is persuaded to a level greater than 50%. But the most reasonable interpretation can mean something less than 50% if there is more than two reasonable interpretations of the statute. Then, presumably, the most reasonable interpretation could be the one at a 40% level if the other two are at 30%. But, even though not the more likely than not interpretation, a court has to pick one interpretation and would, presumably, pick the 40% level.
But what does a court do when the interpretations are 50-50 with no one of them more likely than not? I don't have an answer to that question, but I do want to pursue the question in the context of an agency interpretation in a regulation. The court would then apply the
Chevron Framework (based on
Chevron U.S.A., Inc. v. Natural Resources Defense Council, Inc., 467 U.S. 837 (1984) and its progeny).
Chevron deference would mean, theoretically, if the agency in the above three interpretation choice example, chose a 30% interpretation, the court should defer to it (assuming 30% is within the range of reason even though it believed the 40% interpretation was the most reasonable (actually I would say was the more reasonable)).
Now, going back to the two interpretation choice example,
Chevron would say that, if the Choice 1 were 60% and Choice 2 were 40% and the agency interpretation was Choice 2, then the agency interpretation controls (provided the court agrees that Choice 2 is at least a reasonable interpretation). Perforce, that would mean that if the interpretations are equally persuasive (50% for each, the state of equipoise under the fact finding analogy), then the agency interpretation governs.
I recently picked up this on
Chevron and equipoise (Paul A. Larkin, Jr.,
Reawakening the Congressional Review Act, 41 Harv. J.L. & Pub. Pol'y 187, 209 (2018),
here, in discussing judicial review of agency interpretations:
[T]he controversy is biased in the agency's favor. Chevron and other Supreme Court decisions place a thumb on the government's side of the scale when it comes to the meaning of federal law, with the agency winning when it has the better of the argument and when courts find themselves in equipoise.
Notice that the author says
Chevron applies (i) when the agency has the better (in percentages more than 50%) or is in equipoise (50%-50%). As I suggest above, the way I read
Chevron is that
Chevron deference to the agency interpretation may apply in a third category -- when an agency interpretation is not the better and there is no equipoise, so long as the agency interpretation is reasonable.
Indeed, to work this further, if the agency interpretation is better (in the court's mind), then deference means nothing because that is the interpretation the court would have chosen anyway. So, deference is meaningful only in the equipoise situation (a rare occurrence in fact-finding and, I think, equally rare in law finding) and where the agency interpretation is not the better interpretation but is reasonable.
Addendum 1/25/19: