Daniel W. Wolff

Partner

Partner

Washington, D.C.
- D
  +1.202.624.2621

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Areas of Focus

Overview
Representative Matters
Insights
Related Practices/Industries

Overview

Dan Wolff represents clients facing enterprise-level risks arising out of government enforcement actions and complex commercial disputes. He is a problem solver who understands how to use litigation, whether as plaintiff or defendant, to achieve exceptional business solutions and outcomes. Dan leads the firm’s administrative law litigation practice, counseling clients and litigating on their behalf in federal and state courts around the country in matters arising under the Administrative Procedure Act, other federal statutes, and the U.S. Constitution. He also litigates commercial disputes and matters arising in tort. He has deep experience arguing dispositive motions and appeals, in addition to trying jury cases. Notably, The National Law Journal named Dan a Political Activism and First Amendment Rights Trailblazer.

Beyond the courtroom, clients also seek Danʼs counsel in government investigations of workplace accidents, fatalities, supervisor liability, and requests for company records.

Dan serves on the firm's Public Service Committee and maintains an active pro bono practice. In recent years, he has focused on civil rights impact litigation, helping to secure victories or favorable settlements under the First Amendment, § 1983, and the Voting Rights Act.

Immediately following law school, Dan clerked for two years in the Southern District of Ohio for the Honorable Walter H. Rice. He 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.

Career & Education

University of Wisconsin, B.A., 1992
University of Dayton School of Law, J.D., summa cum laude, 2001
- University of Wisconsin, B.A., 1992
- University of Dayton School of Law, J.D., summa cum laude, 2001
District of Columbia
Ohio
Supreme Court of the United States
U.S. Court of Appeals for the Second Circuit
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 Fifth 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 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 District of Maryland
U.S. District Court for the Northern District of Ohio
U.S. District Court for the Southern District of Ohio
- District of Columbia
- Ohio
- Supreme Court of the United States
- U.S. Court of Appeals for the Second Circuit
- 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 Fifth 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 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 District of Maryland
- U.S. District Court for the Northern District of Ohio
- U.S. District Court for the Southern District of Ohio

Daniel's Insights

Press Coverage | 04.30.25

A Hard Look At The President's Removal Power

Press Coverage | 04.15.25
Will Legal Challenges From Small Businesses Actually End Trump's Tariffs?
Press Coverage | 04.10.25
Are Trump's Tariffs Unconstitutional? President Slapped With A Lawsuit Over China Levies
Blog Post | 04.04.25
First Suit Against Trump IEEPA Tariffs Filed in Florida

View All Insights

Representative Matters

Administrative Procedure Act / Constitutional Law / Appellate Litigation

Dan is a veteran federal district court litigator against the United States. He has brought numerous actions on behalf of clients against Cabinet-level departments or their sub-agencies challenging agency actions and seeking injunctive and declaratory relief under the Administrative Procedure Act (APA) or U.S. Constitution.
Over the last several years, Dan has secured victories on summary judgment for clients in multiple U.S. District Courts in cases arising under the APA, other federal statutes, or the Constitution.
Dan has presented oral argument in more than a dozen cases before the U.S. Courts of Appeals for the D.C., Fourth, Seventh, Eighth, Tenth, Eleventh, and Federal Circuits. He has co-authored merits briefs in two cases before by the U.S. Supreme Court, both decided in favor of Crowell’s clients, as well as briefs filed in other federal circuit courts of appeals. He has also argued appellate matters in the state/local courts of the District of Columbia and Maryland.
As part of his litigation practice, Dan represents clients as intervenors or amici in third-party APA litigation filed by or against federal agencies.
Dan advises clients on rights and litigation strategies arising under the Freedom of Information Act (FOIA) and litigates FOIA cases in the federal district courts.

Civil Litigation and Trials

Dan litigates commercial and other civil cases on both the plaintiff and defense sides. He has represented clients in matters arising under breach of contract, fraud, products liability, and civil RICO.
In 2022, Dan was part of a federal district court trial team that successfully defended a client that had been sued under federal statutory and state common law tort theories. Dan successfully argued the motion for summary judgment, knocking out the common law claims on federal preemption grounds. Following a week-long trial, the jury returned a verdict for Crowell’s client on the federal statutory claim.
Dan has appeared in multiple state-court venues in cases arising under breach of contract and tort theories.

Compliance Counseling and Enforcement Defense

In addition to his litigation practice, Dan counsels clients on compliance with workplace safety and health standards promulgated by the Department of Labor’s Occupational Safety and Health Administration (OSHA) and Mine Safety and Health Administration (MSHA). He also defends industry clients against citations and penalties issued by those agencies before administrative tribunals.