Axios

The CEOs of Apple, Facebook, Amazon and Google will now testify before the House Judiciary antitrust subcommittee on Wednesday, a person familiar with the panel's plans told Axios.

The big picture: The antitrust hearing marks a watershed moment in Washington's scrutiny of Big Tech and will be the first time Amazon CEO Jeff Bezos has testified in Congress. The hearing, originally set for Monday, was rescheduled to accommodate a planned memorial service for late Rep. John Lewis.

The TikTok debate has exposed a deepening fissure among venture capitalists, over their attitudes toward China.

Why it matters: Silicon Valley and China could morph from frenemies into full-blown adversaries.

We now have a closer look at Facebook researchers' "WW" project, a parallel-world version of the social network populated entirely by bots, via The Verge's James Vincent.

Why it matters: The simulation of the entirety of the social network is designed to help the company anticipate and forestall new forms of online mischief and scams using a copy of Facebook's actual codebase.

Gus Coldebella, former chief legal officer of Circle and ex-acting general counsel of the Department of Homeland Security at the end of the Bush Administration, has joined crypto-focused VC firm Paradigm as its general counsel.

Why it matters: Coldebella is one of a growing number of high-profile government officials to jump over to the crypto industry’s private sector.

Twitter, a company well-acquainted with choppy waters, is having an especially rough moment. First, there was last week's brutal hack of high-profile accounts. Then, there was today's disappointing earnings report, along with the company's admission that it needs new sources of revenue, including subscriptions.

The big picture: Twitter has only grown in its importance to politics and culture in the U.S. even as the company's business fortunes have stagnated.

A last-minute scheduling conflict with a planned memorial service for the late Rep. John Lewis has left the House Judiciary Committee likely to delay its long-planned hearing with the CEOs of Apple, Google, Facebook and Amazon, according to sources familiar with the deliberations.

Why it matters: The hearing will represent the first time CEOs of Silicon Valley's biggest firms have appeared together to answer lawmakers' criticisms and charges of monopolistic behavior.