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Photo: Chip Somodevilla / Getty

Two top congressional Democrats have asked Facebook and Twitter to investigate attempts by Russia-backed accounts to undermine Special Counsel Robert Mueller's investigation with a hashtag campaign calling for the public release of a partisan memo involved in the probe.

Why it matters: The letter from Sen. Dianne Feinstein and Rep. Adam Schiff is an attempt to draw attention to the possibility that Russian accounts boosted the "#ReleaseTheMemo" campaign. If that's true, the Democrats wrote, "we are witnessing an ongoing attack by the Russian government through Kremlin-linked social media actors directly acting to intervene and influence our democratic process."

Backdrop: Last Thursday, a House committee voted to allow all House members to see a Republican memo that "selectively references and distorts highly classified information," which led to calls for the memo to be released publicly. #ReleaseTheMemo became the top trending hashtag among accounts linked to the Kremlin, according to the letter sent to Facebook's Mark Zuckerberg and Twitter's Jack Dorsey.

Big picture: The social media companies are getting hammered over Russian interference, and despite their attempts to crack down on Russia-backed accounts and their political activity, this could be a new example of the problem.

Go deeper: The full letter.

Go deeper

Updated 25 mins ago - Health

California surpasses 50,000 COVID-19 deaths

A man prepares a funeral arrangement in in Los Angeles, California, Feb. 12. Photo: Mario Tama/Getty Images

California's death toll from COVID-19 surpassed 50,000 on Wednesday, per Johns Hopkins data.

The big picture: It's the first state to record more than 50,000 deaths from the coronavirus.

2 hours ago - Technology

Facebook bans Myanmar military

A protester holds a placard with a three-finger salute in front of a military tank parked aside the street in front of the Central Bank building during a demonstration in Yangon, Myanmar. Photo by Aung Kyaw Htet/SOPA Images/LightRocket via Getty Images

Facebook said on Wednesday it would ban the rest of the Myanmar military from its platform.

The big picture: It comes some three weeks after the military overthrew the civilian government in a coup and detained leader Aung San Suu Kyi, causing massive protests to erupt throughout the country. Military leaders have been using internet blackouts to try to maintain power in light of the coup.

It's harder to fill the Cabinet

Data: Chamberlain, 2020, "United States of America Cabinet Appointments Dataset" Chart: Will Chase/Axios

It's harder now for presidents to win Senate confirmation for their Cabinet picks, an Axios data analysis of votes for and against nominees found.

Why it matters: It's not just Neera Tanden. The trend is a product of growing polarization, rougher political discourse and slimming Senate majorities, experts say. It means some of the nation's most vital federal agencies go without a leader and the legislative authority that comes with one.