So the Nevada Supreme Court makes a questionable ruling interpreting a provision of the Nevada Constitution when it arguably interferes with other provisions of the Nevada Constitution. See the docs here (via Volokh). It is mostly questionable, to be sure, if you're an anti-tax activist, an advocate of retrenchment in the area of state-funded education and welfare services, a supporter of the referendum method of government, an enthusiast of judicial restraint, or someone who likes to criticize judicial supremacy in general. I fall into the last category but I'm still not sure where I stand with respect to the decision. If you agree with the way that the court has framed the matter -- that the supermajority requirement for tax bills conflicts with the requirement that public education be funded -- then you can stomach the conclusion, that the supermajority requirement must yield and a majority vote on a tax bill is permissible.
One thing that I find interesting in this case is that the majority opinion raises the issue of whether or not constitutions are actually judicially enforceable. Despite the strong judicial supremacy rhetoric (including a citation of Marbury), what the Nevada Supreme Court has done here is allow the Nevada legislature to ignore a section of the Nevada Constitution in order to fulfill the demands of another section of the Nevada Constitution. The question is a bit complex, since the court also ordered the legislature to fulfill its duty to fund education under the sections of the Nevada Constitution that require that legislative function. It's possible that the Nevada Supreme Court would enforce the 2/3 requirement for tax bills under other circumstances, just not in this one, so it's not necessarily the case that this requirement is judicially unenforceable in general. But if the majority members of the legislature had stood up in the state house after passing a tax bill by simple majority vote and said, "let's just ignore the supermajority requirement," and directed the tax collection officers to set about their work, then the shoe would have been on the other foot, and the anti-tax folks would be in the position of going to court to ask for the enforcement of a constituitonal provision. If the Nevada Supreme Court simply refused to enforce that provision, then the state would basically be in the same position that it is in right now with respect to the budget.
What the court has done here is tell the legislature to "proceed expeditiously [. . .] under simple majority rule." The legislature could refuse -- its members could issue a statement of public protest and then pack up and go home. Then we'd have a very interesting situation where the court would have to explore the limits of its own enforcement powers. Of course, the court is probably estimating that a minority of state legislators don't want a tax increase anyways, so the court is actually allying itself with the stronger party in the dispute, perhaps granting them cover for an unpopular decision to raise taxes. The court is also allying itself with education advocates and anti-anti-tax folks; the first is probably smart given the political popularity of education. As for the second, who knows. (I seem to recall an article by Martin Shapiro on the idea that the Supreme Court was seeking out a constituency when it ruled in favor of strong protections for sex equality, and it's that kind of judicial action that I'm thinking about here.)
Eugene Volokh sees this as an incredible case of judicial overreaching; he calls it an "an outrageous violation of the Nevada Constitution," but, contra the Claremont Institute folks, not a federal matter. I agree with him on the second charge. The Claremont Institute is trying to push the claim that the Nevada Supreme Court deprived the citizens of Nevada of a "republican form of government," among other things, and that the federal courts should get involved in this dispute between the Nevada governor, legislature, and Nevada Supreme Court over the meaning of the Nevada Constitution. I think that the Republican Guarantee Clause claim is simply risible: in order to make that claim, Claremont has to reduce the category "republican form of government" to the bare meaning of popular ability to structure its government "as they see fit" (see the memorandum of points and authorities here, pdf file). Most founders would find it nihilistic to reduce the term "republican form of government" to mean simple majority will at the ballot box. I haven't thought about all of the other claims that Claremont raises, but I will say at least this: Timoth Sandefur's argument (via Howard Bashman) that the courts could also enact a 1/2n - 1 rule (less than majority) if they wanted to is theoretically true but not fair to the Nevada Supreme Court's decision in the case, which relied on longstanding constitutional practice for its embrace of the majority rule for tax bills. What Sandefur doesn't mention but the Nevada Supreme Court does, is that for about 130 years, the Nevada Constitution didn't have a supermajority tax bill requirement. Then, when anti-tax advocates learned how to use the state's ballot initiative process in the mid-1990s, they put all sorts of (in my mind silly) things on the ballot, including the supermajority requirement for tax increases. The political arguments in favor of supermajority requirements for tax increases appear increasingly stupid and irresponsible in a time of state budget crunches, homeland security costs, and economic hard times. The successful ballot initiative allows anti-tax advocates to dispense with political defenses of their position and instead opt for the high ground of constitutional argument (as when Sandefur argues that the Nevada Supreme Court's decision "the most cherished principles of American government"). I find the production of constitutional arguments here very interesting, but I don't buy Sandefur's argument. The ballot initiative supporters are making policy decisions in a process that is acknowledged by fair-minded observers to be minoritarian and manipulable by the well-heeled, and their complaints should fall on deaf ears -- especially in federal court.
One more thing: I am actually aghast at the Claremont Institute for supporting this suit. I thought that these folks had a due regard for Lincoln's admonitions that the laws should be venerated (see his 1838 speech here). A constitutional amendment process by citizen initiative, at least as currently practiced out west, is hardly designed to encourage veneration of the laws. Defending the outcome of that process by bringing suit in federal court is an act of betrayal of the true republican heritage. I'm not saying that I agree with Lincoln, but I am saying that this should be a tougher call for the folks at Claremont than it apparently is. Support for conservative anti-tax and retrenchment policies, plus criticisms of judicial activism, have trumped attachment to the sober pieties of republican lawmaking. At least it's clear where Claremont stands.
MORE: For more on Guinn v. Nevada State Legislature, see Lawrence Solum's list of resources here. Daniel Weintraub tempts California legislators to ask the California Supreme Court to get them out of their budget mess, and Sandefur has a blog (apparently) in which he defends Claremont's approach here. See the posts here and here. All the fustigating about "rigid adherence to the fundamental law" ignores the disruptive effects of the contemporary referendum process as a means of crafting constitutional law, it seems to me.
MORE: (The second link on Sandefur's blog is a bit oblique, but I think that you can get what I'm hinting at. If not, don't worry: perhaps I'm off base.) See also David Bernstein's post here, where he simply ignores the fact that there is political pressure from the governor and a supermajority of Nevada legislators to raise taxes and fund education. It even looks like the legislators who voted for the tax increase in the first place also voted for the increase after the Nevada Supreme Court ruling, so there wasn't a "judicial overhang" in the first vote (I could be wrong on that, but if so only in the case of a few votes).
MORE: The Curmudgeonly Clerk is persuaded by Sandefur's dismal picture of Guinn as one stop on the road to judicial tyranny, because the Nevada Supreme Court picked substantive rights over "procedure." Given that the court saw this case as a conflict between two constitutional provisions (not between two something-or-others) and chose one, it seems to me that the court, at least, would see this question as a very narrow, special question regarding conflicting demands of the Nevada Constitution. Sandefur raises the (lawyerly) question of what the boundaries of the weakness of procedural rules are, in the eyes of the Nevada Supreme Court. He should at least look at what the court takes to be its own account of those boundaries.