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Events • September 18, 2012 

# Panel I: Obamacare and Enumerated Powers File Names 

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This work is licensed under a [Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License](https://creativecommons.org/licenses/by-nc-sa/4.0/). 

##### Featuring 

[![Roger Pilon](/sites/cato.org/files/styles/author_picture/public/2021-01/Roger%20Pilon.jpg?itok=cmI-eTjr)](/people/roger-pilon) 

##### [Roger Pilon](/people/roger-pilon)

Senior Fellow in Constitutional Studies

[ 

](https://x.com/Roger_Pilon) [ 

](mailto:rpilon@cato.org) 

[![Ilya Shapiro](/sites/cato.org/files/styles/author_picture/public/2021-01/Ilya%20Shapiro.jpg?itok=m1_rdWBG)](/people/ilya-shapiro) 

##### [Ilya Shapiro](/people/ilya-shapiro)

Former Vice President and Director, Robert A. Levy Center for Constitutional Studies, Cato Institute

[![Media Name: barnett.jpg](/sites/cato.org/files/styles/author_picture/public/authors/crops/barnett_1.jpg?itok=2caPnmbX)](/people/randy-barnett) 

##### [Randy E. Barnett](/people/randy-barnett)

Patrick Hotung Professor of Constitutional Law, Georgetown University Law Center, and Faculty Director, Georgetown Center for the Constitution

[ 

](https://x.com/randyebarnett) 

##### James E. Blumstein 

![Rivkin portrait](/sites/cato.org/files/styles/author_picture/public/2022-08/rivkin.jpeg?itok=0M6W1Xey) 

##### David B. Rivkin Jr. 

Partner, BakerHostetler