Digital Markets Investigation

Antitrust Investigation of the Rise and Use of Market Power Online and the Adequacy of Existing Antitrust Laws and Current Enforcement Levels

On June 3, 2019, the House Judiciary Committee announced a bipartisan investigation into competition in digital markets. The investigation includes a series of hearings held by the Subcommittee on Antitrust, Commercial and Administrative Law on the rise of market power online, as well as requests for information that are relevant to the investigation.
The Committee’s investigation will focus on three main areas:
  • Documenting competition problems in digital markets;
  • Examining whether dominant firms are engaging in anti-competitive conduct; and
  • Assessing whether existing antitrust laws, competition policies, and current enforcement levels are adequate to address these issues.

The Subcommittee welcomes any information and tips about competition issues in digital markets. If you have information you would like to share with the Subcommittee, please fill out this form.


Press Releases:

House Judiciary Committee Launches Bipartisan Investigation into Competition in Digital Markets
Cicilline Criticizes Tech Firms for Evasive Testimony, Requests Answers to Questions
Judiciary Antitrust Subcommittee Investigation Reveals Digital Economy Highly Concentrated, Impacted By Monopoly Power


Online Platforms and Market Power, Part 1: The Free and Diverse Press
Online Platforms and Market Power, Part 2: Innovation and Entrepreneurship
Online Platforms and Market Power, Part 3: The Role of Data and Privacy in Competition
Online Platforms and Market Power, Part 4: Perspectives of the Antitrust Agencies
Online Platforms and Market Power, Part 5: Competitors in the Digital Economy
Online Platforms and Market Power, Part 6: Examining the Dominance of Amazon, Apple, Facebook, and Google
Proposals to Strengthen the Antitrust Laws and Restore Competition Online


July 23, 2019 - Letter to Amazon
July 23, 2019 - Letter to Facebook
July 23, 2019 - Letter to Google
July 26, 2019 - Response From Amazon
July 26, 2019 - Response From Facebook
July 26, 2019 - Response From Google

Document Requests:

September 13, 2019 – Request for Information to Facebook 
September 13, 2019 – Request for Information to Amazon
September 13, 2019 – Request for Information to Google 
September 13, 2019 – Request for Information to Apple



Documents Related to Online Platforms and Market Power, Part 6: Examining the Dominance of Amazon, Apple, Facebook, and Google



Investigation of Competition in Digital Markets Majority Staff Report and Recommendations


Expert Submissions:

Submission from Alison Jones and William Kovacic
Submission from Bert Foer
Submission from Bill Baer
Submission from Consumer Reports
Submission from Daniel Crane
Submission from Daniel Sokol
Submission from Deborah Garza
Submission from Geoffrey Manne
Submission from Gregory Werden
Submission from Hal Singer
Submission from Herbert Hovenkamp
Submission from John Newman
Submission from Joshua Wright James Cooper and John Yun
Executive Summary for Submission from Joshua Wright James Cooper and John Yun
Submission from Margrethe Vestager
Submission from Maureen Ohlhausen
Submission from Randal Picker
Submission from Robert Lande
Submission from Sally Hubbard and Antitrust Expert Coalition
Submission from Sanjukta Paul
Submission from Sharis Pozen
Submission from Spencer Waller Weber
Submission from Tad Lipsky
Submission from the American Antitrust Institute
Submission from Thomas Hazlett
Submission from Thomas Lambert
Attachment to Submission for Thomas Lambert
Submission from Timothy Wu
Submission from Harry First and Eleanor Fox
Submission from John Kwoka
Submission from Michael Kades and Antitrust Expert Coalition
Submission from Tim Muris
Submission from Charlotte Slaiman
Submission from Mark Lemley
Submission from Marshall Steinbaum
Submission from Maurice Stucke
Submission from Richard M. Steuer
Submission from Stacy Mitchell
Submission from Zephyr Teachout
Joint Submission from International Center for Law & Economics

“The open internet has delivered enormous benefits to Americans, including a surge of economic opportunity, massive investment, and new pathways for education online,” said Chairman Jerrold Nadler (D-NY). “But there is growing evidence that a handful of gatekeepers have come to capture control over key arteries of online commerce, content, and communications. The Committee has a rich tradition of conducting studies and investigations to assess the threat of monopoly power in the U.S. economy. Given the growing tide of concentration and consolidation across our economy, it is vital that we investigate the current state of competition in digital markets and the health of the antitrust laws.”

“The growth of monopoly power across our economy is one of the most pressing economic and political challenges we face today. Market power in digital markets presents a whole new set of dangers,” said Antitrust Subcommittee Chairman David N. Cicilline (D-RI). “After four decades of weak antitrust enforcement and judicial hostility to antitrust cases, it is vital for Congress to step in to determine whether existing laws are adequate to tackle abusive conduct by platform gatekeepers or if we need new legislation.”

“Big Tech plays a huge role in our economy and our world,” said Ranking Member Collins (R-GA). “As tech has expanded its market share, more and more questions have arisen about whether the market remains competitive. Our bipartisan look at competition in the digital markets gives us the chance to answer these questions and, if necessary, to take action. I appreciate the partnership of Chairman Nadler, Subcommittee Chairman Cicilline and Subcommittee Ranking Member Sensenbrenner on these important issues”

“Technology has become a crucial part of Americans’ everyday lives,” said Antitrust Subcommittee Ranking Member Jim Sensenbrenner (R-WI). “As the world becomes more dependent on a digital marketplace, we must discuss how the regulatory framework is built to ensure fairness and competition. I believe these hearings can be informative, but it is important for us to avoid any predetermined conclusions. I thank Chairman Nadler, Ranking Member Collins, and Chairman Cicilline as we begin these bipartisan discussions.”

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