Actually it is the constitution that reserves it for the states. This is not the only states rights issue that should be taken up nor is it the most important.
Yes, but it will be ahrd to argue against them that the 14th Ammendment does not mean that states must honor what other states do (ie forcing California to recognize a homosexual marriage in Mass). Not saying I don’t like it, but that is the way it appears to me. Does anyone have any good, constitutional (not emotional) way to counter that argument?