GOP presidential front-runner Donald Trump said Sunday the government will provide health coverage for everyone if he is elected president, but said his plan is not a single-payer system like Bernie Sanders, who is seeking the Democratic nomination, wants.On ABC's "This Week," host George Stephanopoulos noted that Trump called his top GOP rival, Texas Sen. Ted Cruz, a liar for saying that a vote for Trump is a vote for Obamacare."I want people taken care of. I have a heart," Trump said. "If somebody has no money and they're lying in the middle of the street and they're dying, I'm going to take care of that person."Trump said he'll achieve his goal by working with hospitals and doctors.In previous comments Trump said he backed a single-payer, universal healthcare system paid for by the government.Trump cited the healthcare systems of Canada and Britain as models for the U.S. Conservatives have noted that both systems are socialized medical programs that limit and ration care, especially for the elderly."We've got to do something," he said. "You can't have a small percentage of our economy, because they're down and out, have absolutely no protection so they end up dying from, you know, what you could have a simple procedure or even a pill. You can't do that. We'll work something out."On Sunday, he insisted his plan would not be a single-payer system.As for Cruz, "maybe he’s got no heart," Trump said. "And if this means I lose an election, that’s fine, because, frankly, we have to take care of the people in our country. We can’t let them die on the sidewalks of New York or the sidewalks of Iowa or anywhere else."