Sen. Bernie Sanders Bernie SandersThe Hill's Campaign Report: Trump faces backlash after not committing to peaceful transition of power Bernie Sanders: 'This is an election between Donald Trump and democracy' The Hill's 12:30 Report: Trump stokes fears over November election outcome MORE (I-Vt.) thanked the conservative mega-donors Charles and David Koch on Tuesday for "accidentally making the case for Medicare for All" in a new analysis on the cost of such a single-payer health-care plan.

Sanders made the comments in a video he posted to Twitter in response to a study published by Charles Blahous at the Mercatus Center at George Mason University — a center subsidized by the Kochs.

Thank you, Koch brothers, for accidentally making the case for Medicare for All! pic.twitter.com/speuEL6ETC — Bernie Sanders (@SenSanders) July 30, 2018

"Let me thank the Koch brothers, of all people, for sponsoring a study that shows that Medicare for all would save the American people $2 trillion over a 10-year period," Sanders said.

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In the study, Blohous predicts Sanders's single-payer health-care plan would raise federal health-care spending by about $32.6 trillion between 2022 and 2031. Other economists noted in the same study, however, that federal health-care spending would drop overall by just more than $2 trillion.

In the video, Sanders thanked the Koch brothers for proving his plan would cut health-care costs.

Medicare for all, which Sanders popularized as a talking point during his 2016 presidential campaign, would cover all U.S. citizens without copays or deductibles.

His proposal has been embraced by those on the left but has been the subject of criticism from others, including President Trump Donald John TrumpSteele Dossier sub-source was subject of FBI counterintelligence probe Pelosi slams Trump executive order on pre-existing conditions: It 'isn't worth the paper it's signed on' Trump 'no longer angry' at Romney because of Supreme Court stance MORE, who once called single-payer a "curse on the U.S."