Trump Will Have A Rude Awakening on Obamacare

After reiterating his promise to repeal and replace Obamacare, Donald Trump has indicated he may keep two of the law's most popular provisions. One is straightforward enough — children up to the age of 26 being allowed to stay on their parents' plan. The other — preventing insurance companies from denying covering because of pre-existing conditions — offers a perfect illustration of why Trump and most of the other Republicans critics of Obamacare don't understand the health insurance market.