With Washington gridlocked again over whether to raise their taxes, it turns out wealthy families already are paying some of their biggest federal tax bills in decades even as the rest of the population continues to pay at historically low rates.

http://www.boston.com/business/personal-finance/2013/03/03/tax-bills-for-rich-families-approach-year-high/tPcmllN0iKPUSpp53v8WcI/story.html