As stated above, it is probably impossible to find an unbiased source (and we'll avoid getting into the philosophical argument whether a truly unbiased account is possible or not). In any event, its good enough to know the basics of the PPACA (finding out what the "PPACA" is would be a good place to start...) and Wikipedia does a great job of breaking it down.
I think the best way to deal with these questions is to talk about the pros and cons about each aspect presented. Again, as seelee suggested, it is unlikely that an applicant can really comment on what ought to be done in a truly confident manner, as honestly, no one really can know right now how things will turn out. It might be useful to suggest one side, while explaining you understand the argument presented on the other side and can weigh both.
In summary, understand the basics of the healthcare bill, two or three of the biggest problems in healthcare today, and a couple arguments for or against a certain provision and that's reasonable enough for just about anyone IMO.