Maybe it’s me, but the predictable right-wing cries of outrage over the Environmental Protection Agency’s proposed rules on carbon seem oddly muted and unfocused. I mean, these are the people who managed to create national outrage over nonexistent death panels. Now the Obama administration is doing something that really will impose at least some pain on some people. Where are the eye-catching fake horror stories?

For what it’s worth, however, the attacks on the new rules mainly involve the three C’s: conspiracy, cost and China. That is, right-wingers claim that there isn’t any global warming, that it’s all a hoax promulgated by thousands of scientists around the world; that taking action to limit greenhouse gas emissions would devastate the economy; and that, anyway, U.S. policy can’t accomplish anything because China will just go on spewing stuff into the atmosphere.

I don’t want to say much about the conspiracy theorizing, except to point out that any attempt to make sense of current American politics must take into account this particular indicator of the Republican Party’s descent into madness. There is, however, a lot to say about both the cost and China issues.

On cost: It’s reasonable to argue that new rules aimed at limiting emissions would have some negative effect on G.D.P. and family incomes. Even that isn’t necessarily true, especially in a depressed economy, where regulations that require new investment could end up creating jobs. Still, the odds are that the E.P.A.’s action, if it goes into effect, will hurt at least a little.