Erik Agner addresses this question in Politico op-ed, Health care policy libertarians go for.
“Obamacare” seeks to achieve universal health coverage by mandating that people not already covered must purchase health insurance — and makes it possible for all to do so by redistributing resources from the relatively affluent to the relatively poor. For critics like Rep. Louie Gohmert (R-Texas), this stinks of socialism. But is he right?