The Federalist Society

Hon. Eileen O'Connor

Partner, Pillsbury Winthrop Shaw Pittman LLP

Ms. O’Connor is a partner in Pillsbury’s Washington, DC office, and leader of the firm's federal tax controversy and tax policy team. Ms. O’Connor represents clients in civil and criminal federal tax investigations, and in disputes with other government agencies, and formulates and advises on regulatory and legislative solutions to government disputes. She has presented oral arguments in the United States Supreme Court and in the United States Courts of Appeals.

Ms. O'Connor joined Pillsbury in July 2007 after serving for six years as the Assistant Attorney General for the Tax Division of the United States Department of Justice. While at the Department of Justice, she was a member of the President's Corporate Fraud Task Force.

As Assistant Attorney General, Ms. O'Connor headed a division of more than 600 people, including 350 attorneys, and was in charge of all United States civil and criminal tax trials and appeals. Significant cases during her tenure involved corporate and individual abusive tax shelters and offshore tax evasion. She created and implemented continuing programs to coordinate parallel civil and criminal investigations and judicial proceedings with the Internal Revenue Service and United States Attorneys Offices throughout the country. In recognition of her outstanding contributions to the accomplishment of the Justice Department's mission, Ms. O'Connor received the Edmund J. Randolph Award for Outstanding Service. And for her contributions to federal tax administration and enforcement, the Commissioner of the Internal Revenue Service and the IRS Chief Counsel awarded her their highest honors.

Ms. O'Connor has been a corporate tax law specialist with the National Office of the Internal Revenue Service. She is also a CPA and, for more than 20 years, was a national tax consultant with top national accounting firms.

Ms. O'Connor has taught in the graduate tax law program of Georgetown University School of Law, and was Distinguished Adjunct Professor of Tax Policy at the George Mason University School of Law, and has long been a frequent speaker at bar conferences and business seminars.


Education

  • J.D., Catholic University of America, Columbus School of Law, 1978
  • B.S.B.A., Columbus State University, 1973

Publications

Drones and Presidential Authority - Event Audio/Video
2014 Annual Student Symposium
March 25, 2014
Extortion: How Politicians Extract Your Money, Buy Votes, and Line Their Own Pockets - Podcast
Administrative Law & Regulation Practice Group Podcast
November 13, 2013
Terms of Engagement - Podcast
Administrative Law & Regulation Practice Group Podcast
October 14, 2013
The Bucks Start Here - Podcast
Administrative Law & Regulation Practice Group Podcast
October 7, 2013
City of Arlington - How much Deference? - Podcast
Administrative Law & Regulation Practice Group Podcast
June 13, 2013
SCOTUScast 4-22-08 featuring Eileen O'Connor
MeadWestvaco Corp. v. Illinois Dept. of Revenue
April 22, 2008

The Federalist Society