A number of conservatives have asserted that, contrary to what I've written, the House Republican budget written by Paul Ryan does not cut taxes for high earners. (See John McCormack, Ramesh Ponnuru, Charles Krauthammer, and McCormack again quoting Ryan.) Here's the argument. Ryan keeps overall tax levels the same as they are right now by making the tax cuts permanent. He would then reduce the corporate tax rate and the top income tax rate by ten percentage points, from 35% to 25%. But he would make up for that additional revenue loss by closing "loopholes and deductions," many of which benefit the rich. Therefore, his plan doesn't really cut taxes on the rich.

There are four problems with this claim, each of them fatal.

First, the argument simply reflects a legitimate difference in baselines. Under current law, the Bush tax cuts are in full effect, but expire at the end of 2012. Keep Bush-era tax levels in place is not a tax cut compared with the tax code now, but it is a tax cut compared with the tax code in 2013. Which is the true baseline? I think both sides have a point, and Congressional scorekeepers have taken to using both baselines.

When President Obama accuses Ryan of cutting taxes for the rich, he's using the post-2012 baseline. I consider that the best point of reference because the most important force in our political system is inertia. Given our multiple veto points, it takes great effort to enact a policy change that the parties disagree upon. Ryan proposes to make that change. Therefore, I think it's fair to describe him as "cutting taxes," even if revenues did remain at present levels (which I dispute, but more on that later.) I do think there's merit in both baselines. The argument that Obama is lying about Ryan -- that calling him a tax-cutter is, in Krauthammer's characteristically understated phrasing, "scurrilous" -- rests upon the assumption that the current-policy baseline is not only more preferable but the only remotely honest point of reference. That seems like a huge stretch.