>> charlie craig and daven mullens were turned down when they asked to have a wedding cake created bye bakery in colorado in 2012. they said what happened to them was wrong. >> we don't want another couple to go through pain and humiliation we experienced. >> the cake maker jack phillips believed freedom of religion is on his side. >> it is hard to believe the government is forcing me to choose between providing for my family, and my employees, and violating my relationship with god. >> before the justices today, his argument seemed to turn more on being a self-described artist and freedom of speech, which can the law professor matthew cole says has stronger constitutional protections. he believes the high court faces two difficult questions. >> if we recognize making a cake as freedom of speech, is it possible the draw the line or is anything freedom of speech? the other serious problem that the court has to deal with, where do you draw the line on what somebody can express in terms of discrimination? >> here in the bay area, this baker is following the case. he said he's rejected ce