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Brian Callanan

Associate, King & Spalding
Brian Callanan

Brian Callanan is an associate in the national appellate practice at King & Spalding. He has participated in cases before the Supreme Court, federal courts of appeals, and state and federal trial courts.

Mr. Callanan has drafted appellate briefs and critical motions in matters involving a broad range of complex legal issues. He has considerable experience litigating against federal agencies and advising clients on administrative law matters. He has represented clients before, or in litigation against, agencies including the Department of Transportation, National Labor Relations Board, Securities & Exchange Commission, Commodity Futures Trading Commission, Federal Reserve, Department of Health & Human Services, and Food & Drug Administration. Among other successes, he participated in an Administrative Procedure Act challenge that prompted a federal agency to withdraw the costliest regulatory mandate in the history of the U.S. railroad industry. He co-chairs the Rulemaking Committee of the American Bar Association’s administrative law section and is a member of the Executive Committee of the Federalist Society’s administrative law section.

Before joining King & Spalding, Mr. Callanan was general counsel to U.S. Senator Rob Portman. In that position, he served as principal adviser on tax policy, regulatory policy, and legal issues cutting across all substantive areas. He developed and drafted bipartisan legislation on a range of issues, including bipartisan bills to reform the rulemaking process, to strengthen economic analysis by independent regulatory agencies, to reform the federal permitting process for major infrastructure projects, and to expedite the sale of excess federal property. He advised Senator Portman in connection with his work on the Finance Committee and the Homeland Security & Governmental Affairs Committee. During the same period, he served as staff director of a Senate oversight subcommittee with jurisdiction over all aspects of federal contracting.

Previously, Mr. Callanan was a litigation associate at another major law firm in Washington, D.C.

Mr. Callanan served as a law clerk to Judge A. Raymond Randolph of the U.S. Court of Appeals for the District of Columbia Circuit. He received his J.D., cum laude, from Harvard Law School in 2008. At Harvard, Mr. Callanan served as Articles Editor of the Harvard Journal of Law & Public Policy. Before law school, he served as a speechwriter in the U.S. Senate. Mr. Callanan earned his undergraduate degree, magna cum laude, from Claremont McKenna College, where he was elected to Phi Beta Kappa.


The Federalist Society takes no position on particular legal or public policy issues. The people listed as Experts have spoken or otherwise participated in Federalist Society events, publications, or multimedia presentations. A person's appearance on this list does not imply any other endorsement or relationship between the person and the Federalist Society. All expressions of opinion by an expert are those of the expert.

Publications and Multimedia
Amtrak and the Resurgence of the Non-Delegation Doctrine? - Podcast
Administrative Law & Regulation Practice Group Podcast
December 05, 2014
Why Government Fails So Often: And How It Can Do Better - Podcast
Administrative Law & Regulation Practice Group Podcast
October 09, 2014