(CNN) Businessman Andrew Yang said he supports "Medicare for All" but would keep the option of private insurance, in stark contrast to Sen. Bernie Sanders' original "Medicare for All" plan that essentially eliminates private insurers.

The Democratic presidential candidate said on CNN's "State of the Union" on Sunday that his version of Medicare for All could "exist to complement the current existing private insurance market," and that his campaign would unveil a "more detailed roll-out of the full plan in the days to come."

Yang's campaign website currently lists Medicare for All as one of his three main policies, but does not outline in detail how he would implement his health care plan if elected president.

Medicare for All, which has been spearheaded by Sanders, has emerged as a key fault line for 2020 Democratic candidates. Though it has become a catchphrase among Democrats — several candidates who are senators signed on to the bill as cosponsors — there is no universal agreement on how best to overhaul the American health care system.

"If you look at it, what does it say? Medicare for All, which means that you have a Medicare program that everyone can be enrolled in. It does not say Medicare for All, and all private insurance is hereby illegal," Yang said.

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