Practice Chair
Jason R. Dunn

Jason R. Dunn



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

Throughout his time as United States attorney, deputy attorney general of Colorado and years of private practice, Jason Dunn has handled some of the highest-profile government-related cases in Colorado. As the top federal law enforcement official in the state, Jason led an office of 200 attorneys and staff prosecuting high-profile criminal and civil matters on behalf of the U.S. He and his team brought numerous actions under the False Claims Act (FCA), anti-kickback statutes and various civil and criminal fraud provisions and statutes. He also helped lead the Department of Justice’s Procurement Collusion Strike Force and served on the Attorney General’s Advisory Committees for Cybercrime & Intellectual Property and Terrorism & National Security. This experience gives him unique insight into the trial tactics and decision-making process at the highest levels of government investigations and litigation.

At the state level, Jason co-chairs the firm’s State Attorneys General practice group and leverages his close relationships with attorneys general and their senior staff from across the country to help corporations avoid or navigate the complexities of state AG investigations and litigation. His experience with state AGs covers consumer lending, antitrust, healthcare, airlines and consumer products. Jason is frequently asked to speak to trade associations and legal groups about his insight of state AGs and how they conduct investigations and make decisions.

Jason also regularly advises clients on federal and state campaign finance law, election law and ballot initiative law. 

Representative Matters

Recent Experience

  • 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.

  • Led internal investigation for a public entity accused of financial malfeasance. 

  • Ongoing high-profile internal investigation for state flagship university.

Insights & Publications



  • 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


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


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



"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

Chambers USA, Nationwide: State Attorneys General, 2024

Best Lawyers in America, 2023-2024

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