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48 Wm. & Mary L. Rev. 1247 (2006-2007)
Erie, the Class Action Fairness Act, and Some Federalism Implications of Diversity Jurisdiction

handle is hein.journals/wmlr48 and id is 1261 raw text is: ERIE, THE CLASS ACTION FAIRNESS ACT, AND SOME
FEDERALISM IMPLICATIONS OF DIVERSITY
JURISDICTION
DAVID MARCUS*
ABSTRACT
The Class Action Fairness Act of 2005 (CAFA) expands diversity
jurisdiction to allow most significant class actions based on state law
to proceed in federal court. Hoping to limit the application of state
law through class actions, CAFA's supporters believe that federal
judges harbor a collective animosity toward the large, multistate
class actions the statute targets. CAFA has no substantive compo-
nent, and it does not tighten Rule 23's certification requirements.
Nonetheless, if supporters are right about judicial preferences and
their likely impact on certification decisions, CAFA will weaken the
regulatory reach of state law.
Arguments about diversity jurisdiction and judicial preferences
made during CAFA debates bear a number of striking resemblances
to arguments made for and against diversity jurisdiction during the
decades leading up to Erie Railroad v. Tompkins. Many Progressive
Era lawyers believed that, although no positive law instructed them
to do so, federal judges shared a set of policy preferences that made
them particularly receptive to corporate interests. As an expression
of these preferences, the general common law attracted attention for
its interference with the application of state law. By destroying the
general common law, Erie limited the implications of judicial
preferences for the federalism balance of power.
* Associate Professor of Law, University of Arizona James E. Rogers College of Law. B.A.,
Harvard College, 1998; J.D., Yale Law School, 2002. This Article benefitted from feedback
received after presentation at the University of Arizona, the University of Maryland, and
Loyola Law School (Los Angeles). I owe particular thanks to the Hon. William Fletcher,
Barbara Babcock, Robert Rabin, Norman Spaulding, Mark Kelman, Barbara Atwood, and,
above all, Nina Rabin for comments on ideas and earlier drafts.

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