Republican Donald Trump vows to repeal “Obamacare,” while saying he won’t cut Medicare or have people “dying in the street.” Democrat Hillary Clinton has promised to expand government health care benefits. . health care spending is wildly uneven. About 5 percent of the population — those most frail or ill — accounts for nearly half the spending in a given year. Both candidates would authorize Medicare to negotiate prescription drug prices, which the report says will grow somewhat more slowly after recent sharp increases.