Did you watch the whole town hall or just a clip, just so I know? As for my thoughts, they were talking about pre-existing conditions.
I watched the entire question and answer on Obamacare. Anderson Coopers question asked something to the effect of, if the Obamacare Mandate was repealed how would people with pre-existing conditions get insurance? The first words out of Trump’s mouth were “well, I like the mandate...”
Anyone who wants to can watch the question and answer here. http://hotair.com/archives/2016/02/19/trump-on-obamacare-i-like-the-mandate/