There has been no legitimate Constitutional law for the past half century or so. The Supreme Usurpers have no authority to amend the Constitution from the bench; thus, all such rulings are null and void.
The problem is there's never going to be an agreement about the interpreatation of a text. Congress can pass any law they want. The President has to enforce the law. The Judicial branch however has to interpret existing texts avialble for us all to interpret for ourselves. Therefore which rulings are correct or otherwise will always be in question.