Illustration: Sarah Grillo/Axios

The CEOs of Apple, Google, Amazon and Facebook have agreed to testify at a hearing at the end of the month as part of a congressional antitrust investigation into the power of online platforms.

Why it matters: The high-profile hearing will let lawmakers directly question company leaders before releasing a report that will detail the findings of their year-long probe and possibly recommend changes to antitrust law.

Details: The agreement to appear before the House Judiciary antitrust subcommittee was first reported by The New York Times.

  • People familiar with the planning told Axios the CEOs expect to appear virtually, likely in the last week of July, although the sources cautioned that could change.

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Facebook hate-speech boycott had little effect on revenue

Illustration: Sarah Grillo/Axios

The high-profile Facebook ad boycotts that began in June and ramped up in July, pressuring the social network to act more forcefully against hate speech, have so far not put much of a dent in Facebook's top or bottom lines.

Driving the news: Facebook beat Wall Street revenue expectations for the second quarter, and it said that the growth of its ad business during the first three weeks in July was roughly the same as it was last year during the same timespan.

Elliott Abrams to replace Brian Hook as Trump's Iran envoy

Brian Hook. Photo: Tayfun Coskun/Anadolu Agency via Getty Image

President Trump's Iran envoy, Brian Hook, is stepping down, Secretary of State Mike Pompeo confirmed Thursday. He will be replaced with Venezuela envoy Elliott Abrams, a noted Iran hawk who will serve in both roles.

Why it matters: Hook had been tasked with executing Trump's "maximum pressure" policy toward Iran, working closely with Pompeo. That strategy has deepened tensions and thus far failed to force Iran back to the negotiating table, as Trump had hoped.

Ohio Gov. Mike DeWine tests positive for coronavirus ahead of Trump visit

Photo: Justin Merriman/Getty Images

Ohio Gov. Mike DeWine (R) has tested positive for COVID-19 and plans to quarantine at his home for the next 14 days, his office announced Thursday. He currently has no symptoms.

Why it matters: The 73-year-old DeWine was set to meet President Trump Thursday on the tarmac at an airport in Cleveland and was tested as part of standard protocol. He is the second governor known to have contracted the coronavirus, after Oklahoma Gov. Kevin Stitt (R).