"Democrats offered amendments they knew would fail but that put senators on record voting for or against some of the more popular provisions of Obamacare. Those include a provision barring insurance companies from refusing to cover patients with pre-existing medical conditions and a provision that allows young adults to remain on their parents' health insurance until age 26.
Republicans have said they plan to keep those provisions in whatever replacement plan they offer."
http://www.usatoday.com/story/news/politics/2017/01/11/senate-begins-obamacare-repeal-process-all-night-voting-marathon/96447956/