Here is a link to Catholic U law professor Mark Rienzi’s recent essay on conscience. http://www.thepublicdiscourse.com/2011/03/2854 This essay is based on a longer article, which I have mentioned before. See http://uffl.org/blog/?p=491 This essay provides a good summary of his argument. Rienzi argues that Roe and Casey, with their emphasis on autonomy arguments, provide support for a right to conscience.
Richard M.