FYI, Jim Robinson appears to be an "extreme" "purist" "who wants to rant and rave" - when asked, "Do you want to legalize only HALF the dope in this country?" he replied, "Only in the half of the states that would." He then went on to quote the text of the Tenth Amendment.
SO out of curiosity are you suggesting that the states can do whatever they want whenever they want? Is it okay if the states decide that DOMA is incorrect and so they will pass same sex (or any other version of aberration) marriage and have no interference from the federal government?
Since I am not on SCOTUS and I never will be my opinion is of little value to anyone. I do read those who are better educated on these things than I am (such as Mark Levin and Anton Scalia and others). Even they admit to limitations to the Constitution. It is our best hope for freedom no doubt. But it is not the word of God. It was written by men and serves us well. I am an originalist. Not agreeing with you or Jim Robinson on this issue does not worry me. Since we probably agree on so much more than this.