Here in the egalitarian paradise of the United States, there is apparently nothing worse than “class warfare” – which is why Republicans are trying to affix this damning label to President Obama’s new plan to raise taxes on the rich. One hitch, though, is that the billionaire Warren Buffett is not alone in his willingness to pay higher taxes. Many other wealthy Americans are also ready to see their taxes go up. The battle over taxes, its turns out, is not just between the rich and everyone else; the upper class itself is divided on this issue.