During his more than 25 years at Kirkland, Jeff Rosen has handled a wide variety of complex legal problems for major companies and organizations. In 2009, Jeff rejoined the Firm as a senior partner in the Washington, D.C. office, following more than five years of public service. In recent years, Jeff's practice has focused on both regulatory and litigation matters. During his previous 21 years at Kirkland from 1982 to 2003, Jeff's practice principally involved complex business litigation matters involving antitrust, securities, contracts, RICO, business torts, government enforcement actions and product liability, including class actions. He has handled litigation before federal and state courts in more than 20 states, including jury trials, bench evidentiary hearings, arbitrations and appellate arguments. He also served on Kirkland's Firmwide Management Committee and as Co-Head of the Washington, D.C. office.

From 2003 to 2006, Jeff served as the General Counsel of the U.S. Department of Transportation, after having been unanimously confirmed by the U.S. Senate. As that Department's Chief Legal Officer, he had final authority within the DOT to resolve all legal questions arising within or referred to the Department. As General Counsel, he oversaw the activities of more than 400 lawyers in the Transportation Department and its operating administrations. Jeff also had responsibility for DOT's regulatory program, enforcement and litigation activities, legal issues relating to international activities involving transportation, legislative proposals, and he acted as counsel to Secretary Norman Mineta. At DOT, Jeff testified on behalf of the Administration before various committees of Congress on ten occasions. He served on DOT's Credit Council, which was responsible for four federal loan programs. In addition, he served as the Government's representative on the Amtrak Board of Directors, which was responsible for overseeing the company's management, personnel, operations, and finances.

From 2006 to 2009, Jeff served as General Counsel and Senior Policy Advisor for the White House Office of Management and Budget, which made him the Administration's lead lawyer for regulatory and fiscal issues, as well as for executive orders. Jeff's legal responsibilities included giving analysis and advice to the OMB Director and the President with regard to federal laws related to a wide array of government agencies and programs, as well as administrative law, Constitutional law, ethics laws, federal credit and insurance laws, litigation against the United States, and federal budget and appropriations laws. He also handled responses to Congressional oversight and investigations.