Skip to Main Content
Colorado Attorney General

Phil Weiser

Colorado Attorney General

File A Complaint
  • About Us
    • Attorney General Bio & Photos
    • Vision & Values
    • Senior Staff & Organization
    • Colorado Attorney General Annual Report
    • Attorney General Opinions
    • Budget & Accounting
    • Contact Our Office
  • Sections
    • Administration
    • Civil Litigation & Employment Law
    • Consumer Protection
    • Criminal Appeals
    • Criminal Justice
    • Natural Resources & Environment
    • Division of Community Engagement
    • Revenue & Regulatory Law
    • State Services
  • Careers
    • Attorney & Other Non-Classified Positions
    • Fellowships
    • Internships
    • Classified Staff Positions
    • Other Opportunities to Join our Team
  • Media Center
    • Press Room
    • Colorado Open Records Act – CORA
    • Defending Colorado: Federal Lawsuit Tracker
  • Resources
    • Code of Colorado Regulations
    • Colorado Privacy Act
    • Colorado Revised Statutes
    • Data Protection Laws
    • Funding Opportunities
    • Lethality Assessment Protocol
    • Office of Financial Empowerment
    • Survivors of Childhood Sexual Abuse
    • Transparency Online Project (TOPS)
    • Victim Assistance
    • Violence Prevention Trainings and Resources
  • Licensing
    • Business Resources
    • Collection Agencies & Debt Collectors
    • Credit Services Organizations
    • Debt Management Services Providers
    • Health Club Bonds
    • Repossessors
    • Student Loan Servicer Licensing
    • Telemarketing
    • UCCC Licensing & Notification
  • Recursos en español

Attorney General Phil Weiser says antitrust enforcement at a critical juncture as modern market forces push antitrust law into new territory

April 21, 2022 (DENVER) – Attorney General Phil Weiser today joined Nebraska Attorney General Doug Peterson in submitting joint comments on the Federal Trade Commission and U.S. Department of Justice’s joint initiative to revise the Horizontal Merger Guidelines, which was announced earlier this year. The attorneys general emphasize that antitrust enforcement is at a critical juncture as modern market forces push antitrust law into new territory.

The Horizontal Merger Guidelines are used by the federal antitrust agencies, state attorneys general, and courts to review proposed mergers and acquisitions and assess competitive effects. These guidelines also serve as a legal framework that not only informs the analysis of transactions affecting millions of consumers every year, but also shapes merging parties’ behavior. The current guidelines were last updated in 2010.

“Our market landscape shifted significantly in the past 10-20 years, and the guidelines must take account of those changes,” Weiser said. “We need the right tools to stop anticompetitive behavior and ensure mergers do not decrease competition and harm consumers.”

In the comments, the Colorado and Nebraska attorneys general highlight key issues affecting modern competitive dynamics in the United States, including digital markets and nascent competitors, and offer important context on marketplace realities that are driving the need to update these guidelines.

The attorneys general recommend that the FTC and DOJ clarify in the guidelines that effective merger review must consider a variety of evidence and reexamine standards that are described in the guidelines to ensure effective antitrust enforcement. They also note that the elimination of nascent competition, or new competition that threatens to oust long-standing companies, is a growing concern that needs to be addressed in the guidelines.

“State attorneys general are uniquely situated to monitor local anticompetitive behavior,” Weiser said. “In Colorado, for instance, we protected Medicare-eligible residents in the Colorado Springs area against an anticompetitive merger proposed between DaVita and UnitedHealth Group and stopped the Bass Pro/Sportsman’s Warehouse merger. Improving the merger guidelines can help us continue this important work.”

Weiser and Peterson are the co-chairs of the National Association of Attorneys General Antitrust Committee.

###

Media Contact
Lawrence Pacheco
Director of Communications
(720) 508-6553 office | (720) 245-4689 cell
Lawrence.pacheco@coag.gov

Most Recent

Colorado attorney general logo against mountain peaks background and text that reads News from Attorney General Phil Weiser

Attorney General Weiser issues statement at start of trial against Meta over addictive features that harm kids

Aug. 17, 2026 (DENVER) – Ahead of opening statements, Attorney General Phil Weiser today issued the following statement as a bipartisan coalition of attorneys general began presenting their case against Meta, alleging the social media giant knowingly designed and deployed […]

Colorado attorney general logo against mountain peaks background and text that reads News from Attorney General Phil Weiser

Attorney General Phil Weiser sues Trump administration for unlawfully demanding personal info of commercial driver's license holders

Aug. 13, 2026 (DENVER) – Attorney General Phil Weiser joined a coalition of 22 attorneys general and the state of Pennsylvania today in filing two lawsuits against the Trump administration for demanding production of a database of state-owned records containing […]

Colorado attorney general logo against mountain peaks background and text that reads News from Attorney General Phil Weiser

Safe2Tell report highlights July interventions as new school year begins

Aug. 11, 2026 (DENVER) – As Colorado students return to school, Safe2Tell’s final monthly report for the 2025–2026 reporting year highlights how July reports led to mental health interventions, addressed student harassment, and connected Colorado students with support when it […]

Office of the Attorney General
Colorado Department of Law
Ralph L. Carr Judicial Building
1300 Broadway, 10th Floor
Denver, CO 80203

(720) 508-6000

Contact the Office of the Attorney General

Contact

ACCESSIBILITY STATEMENT

DECLARACION DE ACCESIBILIDAD

Facebook
Twitter
LinkedIn
Instagram
YouTube
BlueSky

Attorney General Phil Weiser is working to defend Colorado communities against harmful and illegal actions from the federal government.

Learn more: Defending Colorado