"Rights" don't exist in the first; only freedoms. Obama created no new rights, but simply enforced the liberty of gay couples to visit one another.
I think that this is important to bring up, since the use of the term rights causes some conflict with other conceptions of rights, though I would hold that "natural rights" are merely actions that an individual is at liberty to perform. Many talk about a right to freedom of expression, but really that is an acknowledgement of the fact that one owns his/her own body & is free to say or think what s/he likes. I would also hold that a just government would not seek to infringe on that liberty for any reason, unless it came into direct conflict with another liberty.
