Democratic presidential candidate Andrew Yang Andrew YangBiden's latest small business outreach is just ... awful Doctor who allegedly assaulted Evelyn Yang arrested on federal charges The Hill's Campaign Report: Biden weighs in on police shootings | Who's moderating the debates | Trump trails in post-convention polls MORE on Tuesday night said that the U.S. has "tampered with other elections" in calling for action to be taken to deter Russia from interfering in the 2020 election.

“We have to let Russia know, look, we get it, we’ve tampered with other elections, you’ve tampered with our elections, and now it has to stop, and if it does not stop we will take this as an act of hostility against the American people," Yang said during the Democratic primary debate.

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Yang described Russian hacking efforts ahead of the 2016 U.S. elections as "an illustration of the 21st century threats" such as cybersecurity and climate change, vowing to help "pull us forward" in addressing these issues.

Democratic candidate Sen. Amy Klobuchar Amy Klobuchar3 reasons why Biden is misreading the politics of court packing Social media platforms put muscle into National Voter Registration Day Battle lines drawn on precedent in Supreme Court fight MORE (Minn.), one the main Senate Democrats to push for action on election security over the past several months, pushed back strongly against Yang's assertion that the U.S. and Russia were equal in terms of election interference against other nations.

“I don’t see a moral equivalency between our country and Russia," Klobuchar said, adding that Russian interference in 2016 was "much more serious" than "meddling," and that Russia's actions constituted an "invasion" of U.S. elections.

Klobuchar called for the use of paper ballot backups in every state to prevent election meddling by Russian actors, and also urged passage of legislation to prevent social media companies from running political advertisements without disclosing to users who paid for them.

Specifically, Klobuchar urged passage of the Honest Ads Act, a bill she introduced earlier this year with Sens. Lindsay Graham (R-S.C.) and Mark Warner Mark Robert WarnerFBI director casts doubt on concerns over mail-in voting fraud Democrats call for declassifying election threats after briefing by Trump officials It's time to upgrade benefits MORE (D-Va.).

This legislation, which has not seen movement in the Senate, would change the language of the Federal Election Campaign Act to require the sponsors of ads to be disclosed “in any public communication” instead of specific mediums. It would also require all social media sites with more than 50 million monthly visitors to maintain a public file of all political ads purchased for more than $500.

"We can't wait to become president to get that done, we need to get that done now," Klobuchar said Tuesday night of action to bolster election security.

Other Democratic presidential candidates including former Vice President Joe Biden Joe BidenFormer Pence aide: White House staffers discussed Trump refusing to leave office Progressive group buys domain name of Trump's No. 1 Supreme Court pick Bloomberg rolls out M ad buy to boost Biden in Florida MORE, former Rep. Beto O'Rourke Beto O'RourkeJimmy Carter says his son smoked pot with Willie Nelson on White House roof O'Rourke endorses Kennedy for Senate: 'A champion for the values we're most proud of' 2020 Democrats do convention Zoom call MORE (Texas), Sen. Cory Booker Cory Anthony BookerThe movement to reform animal agriculture has reached a tipping point Watchdog confirms State Dept. canceled award for journalist who criticized Trump 3 reasons why Biden is misreading the politics of court packing MORE (N.J.), and billionaire philanthropist Tom Steyer Tom SteyerTV ads favored Biden 2-1 in past month Inslee calls Biden climate plan 'perfect for the moment' OVERNIGHT ENERGY: Trump administration finalizes plan to open up Alaska wildlife refuge to drilling | California finalizes fuel efficiency deal with five automakers, undercutting Trump | Democrats use vulnerable GOP senators to get rare win on environment MORE also discussed Russian efforts to interfere in U.S. elections during the debate, with O'Rourke saying, "We must be in charge of holding Russia accountable for invading our democracy."

Democrats in both the House and Senate have pushed hard for further action to be taken to secure U.S. elections over the past several months, particularly following the release of the report on Russia's 2016 interference efforts by former special counsel Robert Mueller Robert (Bob) MuellerCNN's Toobin warns McCabe is in 'perilous condition' with emboldened Trump CNN anchor rips Trump over Stone while evoking Clinton-Lynch tarmac meeting The Hill's 12:30 Report: New Hampshire fallout MORE, and of reports on these efforts that have recently been released by the Senate Intelligence Committee.

While the House has passed two major election security bills, and plans to take up another later this month, the Senate Republicans have blocked the majority of proposed bills, citing concerns around federalizing elections.