A California judge refused this week to order a baker to make a wedding cake for a same-sex couple, ruling that to do otherwise would be to trample on the baker’s free speech rights. Superior Court Judge David R. Lampe said in his Monday ruling that wedding cakes run to the core of the First Amendment. “It is an artistic expression by the person making it that is to be used traditionally as a centerpiece in the celebration of a marriage. There could not be a greater form of expressive conduct,” the judge wrote.