Charles and David Koch have funneled millions of dollars to conservative candidates and causes over the last four decades while working tirelessly to open the floodgates for money in politics. The Koch brothers' net worth tops $100 billion, currently tying for fourth on the Forbes 400 list of wealthiest Americans. Their rise to becoming two of the nation's most powerful political figures is explored in the new book, "Sons of Wichita: How the Koch Brothers Became America's Most Powerful and Private Dynasty." The story is based on hundreds of interviews with Koch family and friends, as well as thousands of pages of legal documents.
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