As the Trump administration holds the reins on Affordable Care Act implementation, Commonwealth Fund analysts warn against any reversal of an Obama administration rule that cracked down on the sale of short-term individual insurance plans. The analysis say the plans don't protect the people who buy them and undermine exchange risk pools. Short-term plans for individuals are also unregulated, and the Obama CMS last October issued a final rule that limited the duration of these plans to three months, banned...