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Daniel W. Wolff

Phone: +1 202.624.2621
1001 Pennsylvania Avenue NW
Washington, DC 20004-2595

Dan Wolff is a litigator and regulatory problem solver. He is a partner in Crowell & Moring's Washington, D.C. office and chairs the firm's Administrative Law & Regulatory Practice. In that capacity, Dan works with clients across a wide spectrum of regulated industries, chiefly advising on or handling litigation arising under the Administrative Procedure Act or as a result of government enforcement actions or commercial and products liability actions. Dan regularly appears in federal district and appellate courts around the country and before a host of agency tribunals, and counsels clients on their rights and obligations under a number of federal regulatory programs.

In addition to being a skilled litigator, Dan advises clients in responding to government investigations of workplace accidents, fatalities, supervisor liability, whistleblower complaints, and requests for company records. He also speaks and writes frequently on administrative law litigation, and all aspects of workplace safety and health compliance and enforcement defense.

Representative Engagements

  • Administrative Procedure Act / Constitution
    • Dan is a veteran federal district court litigator against the United States. The federal agencies against which he has litigated affirmative actions arising principally under the APA or U.S. Constitution include the Department of Labor (including sub-agencies), the Federal Trade Commission, the Department of Agriculture (including sub-agencies), the Department of Transportation (including sub-agencies), and the Department of Veterans Affairs.
    • As part of his litigation practice, Dan also represents clients from time to time as intervenors or amici in third-party litigation filed by or against federal agencies.
    • Dan also advises clients on rights and litigation strategies arising under the Freedom of Information Act (FOIA).
  • Appellate / Petitions for Review
    • Dan also regularly appears in the federal courts of appeals, most frequently in challenges to federal agency rulemakings or in opposing (or supporting as intervenor or amicus) some other type of agency action on appeal. He has argued appellate matters before the U.S. Courts of Appeals for the D.C., Fourth, Seventh, Tenth, and Eleventh Circuits. He has also argued appellate matters in the state/local courts of the District of Columbia and Maryland.
  • Recovery Litigation
    • Dan is actively involved in Crowell & Moring's recovery litigation practice.
    • Among other things, he is a central member of the Crowell & Moring team that represents multiple health insurers before the U.S. Supreme Court, the U.S. Court of Appeals for the Federal Circuit, and the Court of Federal Claims in a series of lawsuits seeking hundreds of millions of dollars against the United States for claims arising under the Affordable Care Act (ACA). He has presented multiple arguments before the Court of Federal Claims, including the successful argument in the lead case for damages stemming from the Government’s failure to pay certain cost-sharing reduction (CSR) payments under Section 1402 of the ACA.
  • Enforcement Defense
    • Dan defends industry clients in court or before administrative tribunals against citations and penalties, most frequently in actions commenced by the Department of Labor’s Occupational Safety and Health Administration (OSHA) or Mine Safety and Health Administration (MSHA).
  • Natural Resources
    • In addition to his litigation practice, Dan has subject-matter experience in a wide variety of natural resources and public lands disputes, and this aspect of his practice frequently converges with his litigation practice in matters arising under the National Environmental Policy Act (NEPA). On behalf of mining and other natural resources clients, Dan has appeared and argued in the federal district courts and courts of appeals on NEPA-related matters. He also counsels clients on issues arising under federal mineral leasing programs, the Antiquities Act, and the National Historic Preservation Act, among other things.
    • As part of his natural resources litigation practice, Dan has also regularly appeared before the Interior Board of Land Appeals (IBLA) in public lands disputes, both for petitioning parties as well as intervenors.
  • Commercial and Products Liability
    • As a former federal district court law clerk, Dan is also “at home” as a commercial litigator, having represented clients in matters ranging from fraud and civil RICO to breach of contract.
    • Dan is currently partnering with his Torts colleagues on an active set of national litigation matters involving medical devices, utilizing his substantial briefing and in-court experience to lead the litigation motions practice.

Dan serves on the firm's Public Service Committee and maintains an active pro bono practice in a wide variety of areas, including due process litigation on behalf of special needs students under the Individuals with Disabilities in Education Act, asylum, habeas corpus, landlord-tenant, rights of the disabled under the Americans with Disabilities Act, fair wages, and common law torts. On such matters he has appeared in the federal courts, the U.S. Immigration Court, and the courts of Maryland and the District of Columbia.

Outside of the firm, Dan serves on the steering committee of the D.C. Bar Association’s Administrative Law and Agency Practice Community, is a past president and serves on the Executive Committee and Board of Trustees of the Energy and Mineral Law Foundation (EMLF), is a member of the Rocky Mountain Mineral Law Foundation, and is a member of the ABA and involved in its Sections on Administrative Law & Regulatory Practice, Labor and Employment and its Safety and Health subcommittee, and Environment, Energy and Resources.

Dan graduated from the University of Wisconsin in 1992, where he earned a B.A. from the School of Journalism. He graduated from the University of Dayton School of Law, summa cum laude, in 2001. While in law school, Dan served as an editor on the University of Dayton Law Review and was active with the Environmental Law Society. Immediately following law school, he clerked for two years in the Southern District of Ohio for the Honorable Walter H. Rice.

Dan is licensed to practice in the District of Columbia and Ohio and is also a member of the bars of multiple federal courts, including the U.S. Supreme Court.


  • University of Wisconsin, B.A. (1992)
  • University of Dayton School of Law, J.D. (2001) summa cum laude


Admitted to practice: District of Columbia, Ohio; U.S. Supreme Court, U.S. Court of Appeals for the Third Circuit, U.S. Court of Appeals for the Fourth Circuit, U.S. Court of Appeals for the Sixth Circuit, U.S. Court of Appeals for the Seventh Circuit, U.S. Court of Appeals for the Tenth Circuit, U.S. Court of Appeals for the Eleventh Circuit, U.S. Court of Appeals for the D.C. Circuit, U.S. District Court for the District of Colorado, U.S. District Court for the District of Columbia, U.S. District Court for the Northern and Southern Districts of Ohio

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Firm News/Announcement
Baltimore's "Gag Orders" In Police Misconduct Cases Unconstitutional, Appeals Court Rules Baltimore Brew (July 11, 2019)
In the News
Victory In Free Speech Case Challenging Gag Orders Imposed On Survivors Of Police Abuse In Baltimore American Civil Liberties Union Of Maryland (July 11, 2019)
In the News
"The Month in International Trade – June 2019," International Trade Bulletin (July 10, 2019). Contacts: Jeffrey L. Snyder, Frances P. Hadfield, Edward Goetz, John B. Brew, Spencer Toubia, Robert Holleyman, Andrew Blasi, Eric Obscherning, Jason M. Crawford, Allegra K. Flamm, Thomas A. Lorenzen, Daniel W. Wolff, Amanda Shafer Berman, John E. McCarthy Jr., Anuj Vohra, G. Meredith Parnell
Client Alert/Newsletter
"NEPA Review and Climate Change – Proposed Guidance Aims to Define Federal Agency Duties and Discretion," Environment & Natural Resources Law Alert (July 3, 2019). Contacts: Kirsten L. Nathanson, Daniel W. Wolff, Elizabeth B. Dawson
Client Alert/Newsletter
"Supreme Court Reaffirms that Deference Is Due to Agency Regulatory Interpretations—Sometimes ," Administrative Law Alert (July 1, 2019). Contacts: Daniel W. Wolff, Thomas A. Lorenzen, Amanda Shafer Berman
Client Alert/Newsletter
"SCOTUS Relaxes Definition of "Confidential" Commercial Information Exempt from FOIA," Government Contracts Bullet Points (June 25, 2019). Contacts: John E. McCarthy Jr., Daniel W. Wolff, Anuj Vohra, G. Meredith Parnell
Client Alert/Newsletter
"Supreme Court Grants Certiorari in Tucker Act Case Regarding ACA Payments," Government Contracts Bullet Points (June 24, 2019). Contacts: Stephen J. McBrady, Daniel W. Wolff, Clifton S. Elgarten, A. Xavier Baker
Client Alert/Newsletter
"COFC Grants Summary Judgment on Statutory and Implied-in-Fact Contract Claims in ACA Litigation," Government Contracts Bullet Points (June 14, 2019). Contacts: Stephen J. McBrady, Daniel W. Wolff, Skye Mathieson, Monica DiFonzo Sterling, Charles Baek
Client Alert/Newsletter

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Crowell & Moring LLP is an international law firm with more than 500 lawyers representing clients in litigation and arbitration, regulatory, and transactional matters. The firm is internationally recognized for its representation of Fortune 500 companies in high-stakes litigation, as well as its ongoing commitment to pro bono service and diversity. The firm has offices in Washington, DC, New York, Los Angeles, San Francisco, Orange County, London, and Brussels.

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