I was leaving for vacation the day of the supreme court decision on the ACA, and did not make a posting. The following 2.5 page article from NEJM provides a nice summary of the decisions, which are slightly more complex than has been presented in the media.  The author is a law professor at Suffolk University here in Boston.

R.M. Landers | July 2, 2012 | DOI: 10.1056/NEJMp1206847

http://www.nejm.org/doi/full/10.1056/NEJMp1206847?query=TOC