Objective Morals vs Subjective Morals

Katy writes"I think it would be interesting to consider moral rights as a whole, removed from the categories Wellman has put them in to see how the rights theories conflict and complicate each other when trying to establish the beliefs a single individual has on which moral rights exist. "
I too find the nature of morality fascinating. And although Wellman has not really dove into the arguments for and against the idea of universal morality i think it is an important issue that will eventually have to be faced in our understanding of rights and responsibilities. I don't think most people would argue that we don't have subjective moral rights, that can be established by asking everyone you know their moral beliefs. Where the topic gets interesting, for me anyway, is asking about the possibility of objective moral rights. Moreover, if we have objective moral rights, how do we affirm this and from whom/what were they created by? As I understand it, if there exists objective moral rights we have no way of knowing what they are? What I'm wondering now is how much of a factor should we consider moral rights to be in a legal sense if they are merely subjective, or does it matter?