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Rep. David Cicilline (D-R.I.) is the chair of the House Judiciary Committee's antitrust subcommittee. Photo: Chip Somodevilla/Getty Images

A behind-the-scenes battle to shape Capitol Hill scrutiny of Big Tech's power will burst into public view this week in the most significant way yet.

Driving the news: Representatives of Google, Facebook, Amazon and Apple will face questions Tuesday from members of the House Judiciary Committee's antitrust subcommittee as part of its investigation into their market power.

What we're hearing: The companies — all of which have briefed committee staff in the last month — are bringing antitrust heavy hitters to the hearing.

  • Google witness Adam Cohen has been a prominent part of its attempt to defang antitrust concerns in Europe.
  • Amazon's Nate Sutton is a veteran of the Justice Department's price-fixing case against Apple for allegedly conspiring with publishers to raise the price of ebooks.
  • What they're saying: An Apple spokesperson pointed Axios to its public website on the competition issue, while a Google spokesperson referred us to CEO Sundar Pichai's previous comments. Amazon and Facebook declined to comment.

Behind the scenes: Competitors and critics hoping to turn the heat up on the tech giants have been making the rounds in Washington.

  • Yelp chief executive and Google antagonist Jeremy Stoppelman took meetings on Capitol Hill last week.
  • Spotify, which is pursuing an antitrust case against Apple in Europe, has also been working Congress in advance of the hearing, according to two people familiar with its efforts.

The big picture: Numerous congressional committees and members are scrutinizing the major tech players, after several years of mounting criticism of the companies on different fronts.

  • Sen. Marsha Blackburn (R-Tenn.) announced last week she'd be leading a tech task force for the Senate Judiciary Committee. She also met for more than half an hour last week with Chris Hughes, the Facebook co-founder who has called to break up the social giant.

What to watch: Whether the Justice Department or Federal Trade Commission pursue formal cases against any of the four companies testifying on Tuesday.

  • Yes, but: Even if they come to fruition, these cases can take years to develop.

Go deeper

Updated 2 hours ago - World

UK government: Kremlin has plan "to install pro-Russian leadership" in Ukraine

British Foreign Secretary Elizabeth Truss. Photo: Gints Ivuskans / AFP via Getty Images

The United Kingdom's Foreign Secretary on Saturday night said the government has "information that indicates the Russian Government is looking to install a pro-Russian leader in Kyiv as it considers whether to invade and occupy Ukraine."

Driving the news: U.S. National Security Council spokeswoman Emily Horne called the intelligence "deeply concerning" in a statement to Axios. The Biden administration has said Russia is actively manufacturing a pretext for invasion and warned that Putin could use joint military exercises in Belarus as cover to invade from the north.

Updated 4 hours ago - Science

This powerful new accelerator looks for keys to the center of atoms

Illustration: Eniola Odetunde/Axios

Nuclear physicists trying to piece together how atoms are built are about to get a powerful new tool.

Why it matters: When the Facility for Rare Isotope Beams begins experiments later this spring, physicists from around the world will use the particle accelerator to better understand the inner workings of atoms that make up all the matter that can be seen in the universe.

Updated 4 hours ago - Politics & Policy

Omicron dashboard

Illustration: Aïda Amer/Axios

  1. Health: FDA OKs antiviral drug remdesivir for non-hospitalized COVID patients — Walensky: CDC language "pivoting" on "fully vaccinated" — Pfizer and Moderna boosters overwhelmingly prevent Omicron hospitalizations, CDC finds.
  2. Vaccines: The case for Operation Warp Speed 2.0 — Teens and adults missed 37 million vaccinations during COVID — Team USA 100% vaccinated against COVID ahead of Beijing Olympics — Kids' COVID vaccination rates are particularly low in rural America — Annual COVID vaccine preferable to boosters, says Pfizer CEO.
  3. Politics: Arizona governor sues Biden administration over COVID funds tied to mandates — Biden concedes U.S. should have done more testing — Arizona says it "will not be intimidated" by Biden on anti-mask school policies.
  4. World: American Airlines flight to London forced to turn around over mask dispute — WHO: COVID health emergency could end this year — Greece imposes vaccine mandate for people 60 and older — Austria approves COVID vaccine mandate for adults — Beijing officials urge COVID-19 "emergency mode" before Winter Olympics.
  5. Variant tracker