Practice Co-Chair

Jason R. Dunn

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Background

Former Colorado deputy attorney general and U.S. attorney. Seasoned counselor and litigator for clients facing federal and state attorney general investigations, regulatory matters and internal investigations. Recognized political law advisor to corporations and nonprofits on campaign finance, elections and ballot initiative law.

Jason Dunn brings decades of experience at the highest levels of government and private practice, including service as Colorado’s deputy attorney general and the U.S. attorney for the District of Colorado. Jason has led and advised on some of the most high-profile government investigations in the state, giving him unique insight into how enforcement decisions are made and cases are built.

As co-chair of the firm’s State Attorneys General group, Jason leverages his close relationships with attorneys general and their senior staff across the country. He regularly advises clients in matters involving consumer finance, advanced technology, antitrust, health care, airlines and consumer products. He also speaks frequently to trade associations and legal groups on how state AGs conduct investigations and make enforcement decisions.

As U.S. attorney, Jason led an office of 200 attorneys and staff prosecuting complex criminal and civil matters on behalf of the federal government. His team brought major actions under the False Claims Act, anti-kickback statutes and other civil and criminal fraud provisions. He also helped lead the Department of Justice’s Procurement Collusion Strike Force. This experience informs his work as co-chair of the firm’s Government Investigations & White Collar Defense group, where he counsels clients through sensitive investigations and enforcement actions.

Jason also regularly advises clients on political law, including campaign finance, election law and ballot initiatives.

Practices:

Industries:

TRENDING ISSUES:

Representative Matters

  • Counsel to a national gaming company in matters including government contracting, regulatory compliance, political guidance, and strategic business advice.
  • Ongoing representation of various financial services companies in investigations and litigation by state attorneys general under consumer protection laws and the Uniform Consumer Credit Code.
  • Representation of a consumer finance company in multistate attorney general investigation into its sub-prime lending practices. 
  • Representation of an individual charged with violating foreign agent registration laws by U.S. Department of Justice.
  • Successfully represented a large school district in litigation and appeal of campaign finance complaint through the Colorado Supreme Court.
  • Representation of many high-profile ballot issue campaigns through drafting of measure, title setting process, Colorado Supreme Court, and campaign finance compliance during statewide election.

Insights & Publications

Insights & Publications

Credentials

Education

  • J.D., 2001, University of Colorado Law School
  • M.P.A., 1998, University of Colorado Graduate School of Public Affairs
  • B.S., 1993, University of Colorado College of Business

Previous Experience

U.S. Attorney for the District of Colorado

Deputy Attorney General and Assistant Solicitor General, State of Colorado

Clerk, The Honorable Nathan B. Coats of the Colorado Supreme Court

Admissions

  • Colorado
  • U.S. District Court, District of Colorado
  • U.S. Court of Appeals, Tenth Circuit

Memberships

Faculty of Federal Advocates

Colorado Bar Association

Denver Bar Association

Commissioner, 17th Judicial District Judicial Performance Commission

Appointee, statewide committee examining changes to Colorado’s judicial performance commission system

Member, Search Committee for University of Colorado VP and General Counsel

Former Vice-chairman, Broomfield Planning Commission

Recognition

AWARDS

“Jason is helpful and accessible. His connections really set him apart.” – Chambers USA, 2025

“Jason enables us to focus our time and resources in an efficient and effective way. He gets us meaningful meetings concerning things that are important to us.” “He has solid relationships with the regulators and fantastic insight for us.” “He is a phenomenal lawyer who is great to work with. He has the right relationships whilst being proactive and responsive in how he works. He is a go-to person for interfacing with state AG offices.” – Chambers USA, 2024

The Best Lawyers in America, 2023-2026

Chambers USA, Nationwide: State Attorneys General, 2024-2025

5280 Top Lawyers, 2015‒2018

Colorado Super Lawyers, Rising Star, 2009‒2011

Denver Business Journal 40 Under 40, 2010

Member, Colorado Journal of International Environmental Law and Policy, University of Colorado School of Law

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