The US Constitution is a great document, but it has certain gaps that have been noticed over the last two centuries of use. One of those gaps is the question of whether the Supreme Court's interpretation of the Constitution should be treated as better than the President's interpretation of the Constitution or the Congress's interpretation. When the branches of government disagree about what the Constitution means, who wins?
In practice, i.e. the way things are, the Supreme Court's interpretation wins. That's the way it has been, almost without interruption since the time of the founders. There are some rare situations that have challenged that status quo, such as when around 1832, President Jackson supposedly said "John Marshall has made his decision; now let him enforce it!" Nevertheless, if someone wants to know how the American system actually works, the answer is that the Supreme Court's interpretation wins.
In theory, the answer is not quite so clear. After all, each branch swears allegiance to the Constitution. If the Supreme Court's decision is not just wrong, but actually contrary to the U.S. Constitution, then the Congress should not make laws consistent with the Court's decision and the President should not enforce either the Court's decision or any other unconstitutional laws. In other words, each branch seems to have an independent duty to make sure that the Constitution is obeyed.
Of course, a lot of the controversial Supreme Court decisions don't fall into that theoretical category where the President would have to choose between contradicting the Constitution and following the Court or contradicting the Court and following the Constitution. For example, while the recent Obergefell decision may not be an objectively correct interpretation of the Constitution, it's much harder to argue that obeying the rule in Obergefell would violate some other part of the Constitution.
If one wished to argue that it does violate it, one would presumably rely on the "reservation of powers" clause or something like that, and suggest that obeying the Supreme Court would require usurping rights reserved to the states. On the other hand, that argument does not seem to have a lot of teeth. The real problem with Obergefell is its objective immorality and/or its objectively unreasonable interpretation of the Constitution.
It seems to be much less compelling that the President or Congress could simply disregard a Supreme Court decision because they don't think it was justified, even if they don't think it would violate the Constitution. After all, what if the Court did that? In other words, what if the Court didn't say laws were unconstitutional, but simply refused to treat as valid laws it didn't think were justified? That would seemingly potentially cause chaos.
Thus, in cases where there is not a clear inherent conflict between following the Court and following the Constitution, it seems that even on a theoretical level there is a legal (though not moral) obligation to follow the Court.
That's still not actual Judicial Supremacy (just so-called supremacy) because - as I've previously pointed out - there are checks and balances against a runaway judiciary. One check is that judges can be removed. Another check is that Constitution can be amended. The former option can provide new judicial precedent that overrules prior precedent. The latter can simply directly overrule the precedent.
Steve's biggest challenge to this was:
But since you refuse to challenge judicial supremacy, your appeal to impeachment or the amendment process is preemptively derailed by the very institution you presume to rein in, given the incontrovertible prerogative you ascribe to it. If the Constitution only means whatever judges say it means (a la Chief Justice Hughes), then they can "interpret" the Constitution to immunize judges from impeachment or forbid the abridgment of their authority.Steve's argument here is wrong. What Steve should say is that if the Supreme Court were consistently given an incontrovertible prerogative, they could avoid impeachment and ignore Constitutional amendments. But the current American system does not give them that level of incontrovertible prerogative. The American system lacks that kind of consistency, and as a result does not have that absurd outcome.
Steve may want to argue that the American system would be better if some changes were made, or Steve may want to argue that the American system is inconsistent. Both of those may even be legitimate criticisms (not of me, but of the American system). But both of those arguments from Steve presuppose the point my original article made, one which my friends need to hear, namely that although Obergefell is a very bad law, in the American system it is law.