There's an excellent series of short articles on health care in the US on the New York Times web site - definitely worth a read. I think it's important to become familiar with the issues given that health care improvement is one of the stated goals of the new President. Links to the series are below. If you have any recommendations of other good writing on health care, let me know in the comments. Speaking of comments - be sure to check out the comments in each of these blog posts.
Why Does U.S. Health Care Cost So Much? (Part I) - Economix Blog - NYTimes.com
Why Does U.S. Health Care Cost So Much? (Part II: Indefensible Administrative Costs)
Why Does U.S. Health Care Cost So Much? (Part III: An Aging Population Isn’t the Reason)
Why Does U.S. Health Care Cost So Much? (Part IV: A Primer on Medicare)
U.S. Health Care Costs, Part V: Can Americans Afford Medicare?
U.S. Health Care Costs Part VI: At What Price Physician Autonomy?
U.S. Health Care Costs Part VII: Reining in Doctors Who Cost Too Much