Buried in the fine print of Obamacare regulations, the Trump administration is floating a novel idea for those who can’t afford to shell out tens of thousands of dollars in out-of-pocket medical costs. Why not borrow the money from your health insurance company? In the dense 1,121-page final rule issued last month about how the Affordable Care Act market will operate next year, the administration suggested that insurers consider offering loans to cash-strapped customers.