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Energy & Commerce Committee Chairman Greg Walden. Photo: Drew Angerer/Getty Images

Leaders on the House Energy and Commerce and Senate Commerce Committee Energy separately called on Mark Zuckerberg to testify before their panels on Friday. Both committees indicated they wanted to hold a hearing with the Facebook chief executive soon. Facebook confirmed it was reviewing the calls for its CEO to visit Capitol Hill.

Why it matters: Calls for Zuckerberg to testify are now coming from lawmakers with the influence to potentially make an appearance a reality. In a CNN interview earlier this week, Zuckerberg said he would do so if he was the "right person." Facebook staff briefed committee staff on the situation, but lawmakers said questions were left unanswered.

Go deeper

8 mins ago - Health

The floodgates have opened for vaccine mandates

Illustration: Sarah Grillo/Axios

State governments, private businesses and even part of the federal government are suddenly embracing mandatory coronavirus vaccinations for their employees.

Why it matters: Vaccine mandates have been relatively uncommon in the U.S. But with vaccination rates stagnating and the Delta variant driving yet another wave of cases, there's been a new groundswell of support for such requirements.

Ina Fried, author of Login
8 mins ago - Sports

Axios at the Olympics: Softball on the brink

Cat Osterman, pitching here against Japan on Monday, came out of retirement to play in the Tokyo Olympics. Photo: ina Fried

TOKYO – When the U.S. and Japan take the field in Yokohama on Tuesday, they are playing for more than just a gold medal. As badly as both teams want to win, they also want to show the world their sport deserves a permanent place in the Olympics.

Why it matters: Softball is returning to the Olympics after a 12-year absence, but its long-term Olympic future is uncertain, with the sport not part of the 2024 Games in Paris and plans up in the air after that.

Updated 32 mins ago - Sports

Naomi Osaka eliminated from Olympic Games tennis tournament

Czech 42nd-ranked Marketa Vondrousova (L) shakes hands with Japan's Naomi Osaka after their Tokyo 2020 Olympic Games women's singles third round tennis match at the Ariake Tennis Park in Tokyo on Tuesday. Photo: Giuseppe Cacace/AFP via Getty Images

Naomi Osaka was eliminated from the Olympics Games after losing her Tokyo tennis tournament match 6-1, 6-4 in the third round to Czech Marketa Vondrousova on Tuesday.

Of note: Japan's Osaka is the women's world No. 2, while is Vondrousova ranked No.42.