Christopher A. Jones

Began the practice of law at the Federal Power Commission in 1974. Joined Sidley & Austin (now Sidley Austin LLP) in 1977, elected to partnership in 1981. Co-head of Energy practice, 2006- present

As a former trial attorney for the DOJ, Dan knows the complexities of federal court litigation with federal agencies. He litigates cases for companies facing adverse regulatory initiatives or enforcement actions by agencies like the FDA. Dan Jarcho represents clients in federal trial court and appellate litigation involving federal regulatory issues. Dan has litigated numerous Administrative Procedure Act challenges to federal agency actions, including cases involving the U.S. Food and Drug A...

Rosa S. Jeong focuses her practice on all aspects of international trade laws, including trade remedy proceedings before the U.S. Department of Commerce, the U.S. International Trade Commission, federal courts, and the World Trade Organization (WTO). She has counseled and represented companies in antidumping and countervailing duty proceedings, and appeals of such cases in the U.S. Court of International Trade and the U.S. Court of Appeals for the Federal Circuit. Rosa has also represented U....

William Walsh is a top attorney recognized by Best Lawyers in the practice area(s) of Closely Held Companies and Family Businesses Law. William, who practices law in Fairfax, Virginia, has been recognized since 2026. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which William is held by other top lawyers in the same geographic and legal practice area.

Joel Swearingen is an associate in the firm’s Project Finance and Public Finance practice group, representing issuers, underwriters, and borrowers on a variety of public finance transactions. He also has substantial experience in the field of tax withholding and information reporting, both internationally and domestically. What do you focus on? My practice includes representing clients on tax matters present in connection with public finance transactions. I also advise clients on the in...

Mark R. Rosman is a top attorney recognized by Best Lawyers in the practice area(s) of Antitrust Law and Litigation - Antitrust. Mark R., who practices law in Washington, District of Columbia, has been recognized since 2023. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Mark R. is held by other top lawyers in the same geographic and legal practice area.

Stephen M. Seeger is a litigation partner specializing in construction and government contracts law. He has successfully tried dozens of complex cases in the state and federal courts of the District of Columbia, Maryland and Virginia, as well as arbitral panels, administrative boards and boards of contract appeals. With that perspective, he counsels clients on litigation avoidance and opportunity optimization. Steve is intimately familiar with the standard form commercial construction contrac...

Mr. Terpak is one of the premier Eminent Domain Lawyers in Virginia. He is editor of “Eminent Domain Law in Virginia” (2017), and is listed in BEST LAWYERS in the area of Eminent Domain. He has three times been named Best Lawyers LAWYER OF THE YEAR in the DC Metro area in the area of Eminent Domain, most recently for 2018. He has handled many hundreds of eminent domain (or condemnation) cases, including over 40 trials before juries and commissioners in every jurisdiction in Northe...

Practice Experience Jonathan is a leading global authority on international disputes and investment, as well as complex negotiations and crisis management. As head of Latin American arbitration, he has successfully advised on some of the most critical issues of the era in Latin America and beyond, such as the cultural patrimony of Machu Picchu, the new Ecuador international airport, the Argentine sovereign debt crisis, the development of the Peruvian energy sector and the Panama Canal expansi...

Danny Onorato is a former federal prosecutor and experienced trial attorney. As a defense attorney, Mr. Onorato has successfully represented individuals in a wide variety of complex criminal and civil matters, including many high profile white collar criminal offenses. Mr. Onorato’s clients have included executives from high profile cases including HealthSouth, Enron, KPMG and Fannie Mae. Mr. Onorato has also represented clients in both civil and criminal securities fraud investigations...