Hammond v. Stamps.com, Inc.

GORSUCH, Circuit Judge.

The Class Action Fairness Act promises a federal forum for proposed class actions if (among other things) the amount “in controversy” exceeds $5 million. 28 U.S.C, § 1332(d)(2). But though it has made appearances in many and even pretty ancient federal jurisdictional statutes, the term “in controversy” remains a source of dispute for the parties before us and gives rise to this appeal. Affording the phrase its traditional meaning, we find federal jurisdiction here beyond doubt.

The case comes to us this way. In exchange for a monthly subscription fee, Stamps.com lets…