Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. Senators Warren, Sanders Under Attack at Democrats' Presidential Debate Ken Bredemeier WASHINGTON - Story updated on July 31, at 12:18 am. U.S. health care policies took center stage Tuesday night at the Democratic presidential candidates' debate, with more moderate challengers attacking Sen. Elizabeth Warren and Bernie Sanders, the leading progressives looking to oust President Donald Trump in the 2020 election. Warren and Sanders have both called for a sweeping end to the country's current health care system centered on private company insurance plans offered to 150 million workers through their employers. But their views were under attack almost from the start of the two-hour debate on a theater stage in Detroit, Michigan, the country's auto industry hub. "We don't have to go around and be the party of subtraction and telling half the country who has private health insurance that their health insurance is illegal," former Maryland Congressman John Delaney said. "It's also bad policy. It'll under-fund the industry, many hospitals will close, and it's bad politics." Often political allies Warren, a former Harvard law professor, and Sanders, a self-described democratic socialist, are friends of long-standing and often political allies. They now are both looking for votes from the liberal wing of the Democratic Party. Both defended their position calling for a government-run health care system. "This is not radical," Sanders of Vermont shouted at one point, noting that numerous other Western societies already have adopted government-run systems. "I get a little tired of Democrats who are afraid of big ideas." Warren of Massachusetts rebuffed the critics, saying, "I don't understand why anybody goes to all the trouble of running for president of the United States just to talk about what we really can't do and shouldn't fight for." But their challengers lobbed multiple attacks at the pair, saying their proposals would, over four years or longer, upend the long-standing U.S. health care system, including government-subsidized insurance for moderate and low-income families under the Affordable Care Act, popularly known as Obamacare. Sen. Amy Klobuchar of Minnesota, who has called for more incremental health care policy changes, said, "I have bold ideas, but they are grounded in reality." .