socialism is a form of government where the whole enchilada is owned by the government. Whenever government owns little pieces of the economy, that is not socialism. Having a city owned water utility or electric utility does not make that city a socialist city. Obamacare is clearly NOT socialism because it is not government OWNERSHIP of the whole enchilada... in fact, the government owns hardly any of it. The insurance companies still control the flow of money through our healthcare system, not the government.
And anyone can have their individual opinions as to what degree any law comports with their individual interpretation of the constitution. In fact, the constitution lays out how a bill becomes a law... and ACA did that... and the constitution provides the opportunity to take questions of constitutionality all the way to the highest court in the land where nine learned jurists have been tasked by that constitution to determine whether laws are constitutional or not. ACA has passed that hurdle as well. Sorry.