4. The Class Action Fairness Act of 2005, amended 28 U.S.C. § 1332 to permit diversity jurisdiction over multistate disputes despite the absence of complete diversity of citizenship.

There is disagreement whether under CAFA diversity courts may develop federal choice-oflaw rules. Compare Sherry, Overruling Erie:Nationwide Class Actions and National Common Law,156 U. Pa. L. Rev. 2135, 2136 (2008), with Woolley, Erieand Choice of Law After the Class Action Fairness Act,80 Tul. L. Rev. 1723, 1724 (2006). If Congress intended to overrule Klaxon, how explicit must the statute be? See generally Nagareda, Bootstrapping in Choice of Law After the Class Action Fairness Act, 74 UMKC L. Rev. 661, 684

(2006); Issacharoff, Settled Expectations in aWorld of Unsettled Law: Choice of Law After the Class Action Fairness Act, 106 Colum. L. Rev. 1839 (2006).