Chevron Still Lives

The Fifth Circuit revised its original opinion in BNSF Railway Co. v. United States to expand and revise the discussion of ambiguity as part of the Chevron analysis of an IRS regulation; the outcome remained unchanged.  No. 13-10014 (Jan. 15, 2015).  The new discussion includes a reminder about the limited role of dictionaries, from the venerable en banc opinion about regulations for chicken processing in Mississippi Poultry Association, Inc. v. Madigan, 31 F.3d 293 (5th Cir.1994).  The canon of “noscitur a sociis” (“an ambiguous term may be given more precise context by the neighboring words with which it is associated” also makes one of its infrequent appearances.