Oil, blood and lower taxes: the billion brothers battle against Obama
Oil billionaires David and Charles Koch are among the world's richest men. Staunch advocates for radically lower corporate and personal taxes, they are bankrolling a concerted and largely under the radar effort to oust Obama and "take back America," writes Jane Mayer .
Tags: Advocates, Blood Brothers, Charles Koch, Corporate Taxes, Jane Mayer, Lower Taxes, Personal, Radar, Richest Men