An interesting question can politicians act, at times, in an actively stupid manner? No, not just be misinformed, a bit dim even, but can they end up enacting policies that are so far from their intended consequences that we can only describe them as having been actively stupid?
The answer, you won't be surprised to find out, is yes. As David Henderson points out here.
To recap the story: under Obamacare there are subsidies to the poor who cannot afford to purchase these new insurance plans. However, the law states that only those who buy their insurance through a State exchange can gain those subsidies. Those who buy through a Federally run exchange cannot get them. One can imagine why the law might have been written this way: let's make sure all the States set up exchanges. As we also know, things didn't turn out that way. Most States did not set up exchanges and most are now Federally run. Which means that most customers signing up at most exchanges are not eligible for those all important subsidies. At which point the IRS says this is absurd and allows customers of the Federally run exchanges to have the subsidies.
This is our first admission that yes, politicians collectively can be actively stupid. If even the people running the tax system tell us all that we've got to ignore what they've actually written into the law this is a difficult judgement to escape.
At which point enter a lawsuit. Various characters trying to insist that the IRS must obey the law as it is actually written and deny those subsidies to people on the Federal exchanges. The response to which is but that's insane: it will completely gut the law! Yes, it would: but this defence is our second admission that the politicians acted in a manner which is collectively stupid. The defence being that even Congress couldn't have been that stupid. But, obviously, they were: for the defence is that to obey the law as written would be stupid but it was Congress that wrote the law.
So, I take it that we've now conclusively proved that politiains, as a group, can act in a manner that is actively stupid. At which point we're back to our standard contention. That there are things that must be done, there are also things that can only be done by government. But we should limit the activities of government only to those things that both must be done and can only be done by government for, as we can prove, government is at times actively stupid.