Cite as: 570 U. S. ____ (2013) 31 GINSBURG, J., dissenting evils which have subsequently appeared.” 383 U. S., at 328–329 (emphasis added). Katzenbach, the Court acknowledges, “rejected the notion that the [equal sovereignty] principle operate[s] as a bar on differential treatment outside [the] context [of the admission of new States].” Ante, at 11 (citing 383 U. S., at 328–329) (emphasis omitted). But the Court clouds that once clear understanding by citing dictum from Northwest Austin to convey that the principle of equal sovereignty “remains highly pertinent in assessing subsequent dispar­ ate treatment of States.” Ante, at 11 (citing 557 U. S., at 203). See also ante, at 23 (relying on Northwest Austin’s “emphasis on [the] significance” of the equal-sovereignty principle). If the Court is suggesting that dictum in Northwest Austin silently overruled Katzenbach’s limita­ tion of the equal sovereignty doctrine to “the admission of new States,” the suggestion is untenable. Northwest Austin cited Katzenbach’s holding in the course of declining to decide whether the VRA was constitutional or even what standard of review applied to the question. 557 U. S., at 203–204. In today’s decision, the Court ratchets up what was pure dictum in Northwest Austin, attributing breadth to the equal sovereignty principle in flat contra­ diction of Katzenbach. The Court does so with nary an explanation of why it finds Katzenbach wrong, let alone any discussion of whether stare decisis nonetheless coun­ sels adherence to Katzenbach’s ruling on the limited “sig­ nificance” of the equal sovereignty principle. Today’s unprecedented extension of the equal sover­ eignty principle outside its proper domain—the admission of new States—is capable of much mischief. Federal statutes that treat States disparately are hardly novelties. See, e.g., 28 U. S. C. §3704 (no State may operate or permit a sports-related gambling scheme, unless that State con­ ducted such a scheme “at any time during the period beginning January 1, 1976, and ending August 31, 1990”);

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