I’m puzzled. For as long as I can recall I have been assured that the Grand Old Party will do just about anything to advantage their wealthy friends and benefactors. Of course, no party desires no taxes – not even Republicans — and none – not even Democrats – want full confiscation. So the issue always comes down to the question of how one will square the circle. Should the top marginal rate be 35% or 40%? Aside from the flat tax advocates and a few outré progressives, few are now arguing for 25% or 50%.

Statecraft inevitably involves a distribution of responsibilities and benefits. And, as I have noted, it is traditionally the case that Democrats ask for more sacrifice from the wealthy and Republicans advocate for fewer benefits for the needy.

This being part of our political logic, how then do we explain a central feature of the Republican plans for Medicare and for Social Security, and how do we explain the hesitancy of most elected Democrats to embrace this plan?

One area in which there appears to be some measure of agreement between President Obama and Speaker of the House John Boehner is that means testing Medicare and perhaps even Social Security should be “on the table” – a Thanksgiving turkey, as it were. The argument is that the wealthy might receive fewer benefits or should have to ante up more in the way of co-payments. What’s up with that? In important ways, one should appreciate why Democrats would like that idea and why the Republicans should resist, but things have not quite transpired in that logical way.

Despite the element of soaking (or at least dampening) the rich, some Democrats have pushed back on the idea of means testing Social Security and Medicare. One could readily make the argument that it is unjust or undesirable for the federal government to send out checks to those same rich folks on whom Democrats wish to raise the marginal tax rates. Couldn’t receiving fewer benefits be a form of shared sacrifice so integral to Democratic talking points?

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Read more: Means Testing: The GOP’s Surprising Class Warfare