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Senate Sergeant-at-Arms Karen Gibson at the U.S. Capitol in April. Photo: Tom Williams-Pool/Getty Images)

Senate Sergeant-at-Arms Karen Gibson told CNN in an interview broadcast Sunday there's been an increase in threats against lawmakers in the past year, and "political rhetoric is a key driver" of anger toward elected officials.

Driving the news: CNN's Pamela Brown asked Gibson if the threats stem from the Jan. 6 Capitol riot that led to her predecessor Michael Stenger resigning. Gibson replied: "I would not say since the insurrection, but certainly in 2020 it began to go up considerably and it has remained heightened for a number of members."

  • Gibson noted that political rhetoric is leading to "continued threats unfortunately against a number of elected officials," without naming anyone.
  • Expressing frustration toward elected officials is a right "enshrined in our Constitution and part of what I've sworn to uphold and defend, she said, but "a group of Americans ... have fallen for some conspiracy theories and just some whacked-out ideas that are not based in fact."
"I say tongue-in-cheek now that we have a vaccine for COVID I think we need to work on one for disinformation. But I am concerned about people who just cannot separate fact from fiction."

Go deeper... Senate sergeant-at-arms: Cyber attack against Congress "keeps me up at night"

Go deeper

Senate sergeant-at-arms: Cyber attack against Congress "keeps me up at night"

Karen Gibson, Senate sergeant-at-arms, speaking during a Senate subcommittee hearing during April 2021. Photo: Greg Nash/The Hill/Bloomberg via Getty Images

Senate Sergeant-at-Arms Karen Gibson told CNN she fears a cyber attack against Congress more than violence at the Capitol similar to the Jan. 6 insurrection.

Why it matters: Gibson said Friday that hackers attempt intrusions into Congress' computer networks "every single day" and that a state-backed cyber unit could cripple the government's ability to function by compromising communications networks.

Naomi Osaka eliminated from Olympic tennis tournament in Tokyo

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 after losing her Tokyo tennis tournament match 6-1, 6-4 in the third round to Czech Marketa Vondrousova on Tuesday.

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

Drought pushes 2 major U.S. lakes to historic lows

Kayakers at a boat launch ramp Page, Arizona, on July 3, which was made unusable by record low water levels at Lake Powell as the drought continues to worsen near. Photo: David McNew/Getty Images

Two significant U.S. lakes, one of which is a major reservoir, are experiencing historic lows amid a drought that scientists have linked to climate change.

What's happening: Lake Powell, the second largest reservoir in the U.S., has fallen 3,554 feet in elevation, leaving the crucial reservoir on the Colorado River, at 33% capacity — the lowest since it was filled over half a century ago, new U.S. Bureau of Reclamation data shows.