A helpful link from the Washington Post:
http://www.washingtonpost.com/politics/a-timeline-of-the-affordable-care-act/2013/11/02/76b6f9b6-43f9-11e3-a751-f032898f2dbc_story.html
http://www.washingtonpost.com/politics/a-timeline-of-the-affordable-care-act/2013/11/02/76b6f9b6-43f9-11e3-a751-f032898f2dbc_story.html