Following Lamps Plus, Inc. v. Varela (2019) 139 S.Ct. 1407, this decision holds that at least when its application would change a fundamental attribute of arbitration, the construction against drafter rule is preempted by the FAA.  So, in this case, an ambiguity introduced by the Spanish translation’s mistaken reference to nonbinding, instead of binding, arbitration could not be resolved against the drafter.  The binding nature of an arbitration award is a fundamental attribute of arbitration.  Therefore, the FAA preempted application of contra proferentem, and instead, in accordance with the FAA, doubts must be resolved in favor of (traditional binding) arbitration.