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84 Tul. L. Rev. 1185 (2009-2010)

handle is hein.journals/tulr84 and id is 1197 raw text is: A Separation-of-Powers Defense of the
Presumption Against Preemption
Robert S. Peck*
I.    INTRODUCTION    ........................................................................... 1185
II.   THE BASIS FOR PREEMPTION ..................................................... 1188
A.    Express Preempton ................................................... 1190
B.    Implied Preemption .......................................................... 1191
C     Conflict Preemption ......................................................... 1193
III. THE PRESUMPTION AGAINST PREEMPTION ............................... 1194
IV SEPARATION OF POWERS AND THE ANTIPREEMPTION
PRESUM   PTION  ............................................................................ 1195
V     C ONCLUSION   .............................................................................. 1201
I.   INTRODUCTION
In Wyeth v Levine, the United States Supreme Court revitalized
the   sometimes    dormant presumption        against pre-emption      by
declaring it one of two cornerstones of preemption jurisprudence.'
Under the presumption, the analysis of a claim that federal law
preempts state law starts with 'the assumption that the historic police
powers of the States were not to be superseded by the Federal Act
unless that was the clear and manifest purpose of Congress.'2
Although the Court previously had instructed lower courts that the
preemption analysis always begins with a basic presumption against
pre-emption'3 the Court itself often has honored that mandate in the
breach-when it has bothered to mention the presumption at all.'
*    © 2010 Robert S. Peck. President, Center for Constitutional Litigation, PC.;
Adjunct Professor of Law, American University Washington College of Law & George
Washington University Law School. B.A. 1975, George Washington University; J.D. 1978,
Cleveland-Marshall School of Law/New York University School of Law; LL.M. 1990, Yale
Law School.
1.   129 S. Ct. 1187, 1194 (2009). The Court said one cornerstone of preemption
jurisprudence is the purpose of Congress. Id (quoting Medtronic, Inc. v. Lohr, 518 U.S.
470, 485 (1996)). The other is the presumption against preemption. Id at 1194-95.
2.   Id (quoting Lob1; 518 U.S. at 485).
3.   Bates v. Dow Agrosciences LLC, 544 U.S. 431,449 (2005).
4.   For example, in Geier Y American Honda Motor Co., 529 U.S. 861 (2000), the
majority entirely ignored the presumption against preemption, mentioning it not at all. In
other cases, the presumption is given mere lip service. See Catherine M. Sharkey, Products
1185

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