hide captionDavid Koch is one-half of politically and economically powerful duo known as the Koch brothers. He and his brother, Charles, are tied in sixth place on the list of the wealthiest men on the planet.

David Koch is one-half of politically and economically powerful duo known as the Koch brothers. He and his brother, Charles, are tied in sixth place on the list of the wealthiest men on the planet.

Brothers Charles and David Koch are the subject of the new book Sons of Wichita: How the Koch Brothers Became America's Most Powerful and Private Dynasty. The author, Daniel Schulman, describes the Kochs as having pumped hundreds of millions into remaking the American political landscape, trying to bring their libertarian views into the mainstream.

In addition to backing individual candidates who reflect their views, the Koch brothers have played key roles in the Libertarian Party and in the formation of the Tea Party. Their father, who founded Koch Industries, was also a founding member of the far right group the John Birch Society.

Koch Industries is now the second largest private corporation in the U.S., with $115 billion in annual revenue and a presence in 60 countries. Charles and David are tied in sixth place on the list of the wealthiest men on the planet.

Daniel Schulman is a senior editor in the Washington bureau of Mother Jones, and a founding member of the magazine's investigative journalism team. He tells Fresh Air's Terry Gross about how the Kochs have contributed to today's political landscape.

On the Kochs' political stances

Their ideology is very much a libertarian one. They are currently considered Republican kingmakers, but there are really a lot of places where their philosophy doesn't jive with the mainstream Republican one. For instance, they're generally anti-war. They're civil libertarians; they are not social conservatives in any sense of the word. David Koch has said he's pro-gay marriage. You wouldn't see these guys advocating against reproductive rights. The area that is the sweet spot for them with today's GOP is really economic issues, and they are staunch economic conservatives perhaps more hard-line than even the Republican mainstream...Charles has said in past that his view of government is that it really should be a night watchman that only exists to protect private property rights and to preserve the laws of supply and demand.

On the Kochs' political influence

In the Obama era, you've seen their political network grow by leaps and bounds. Part of this was because there was a major conservative backlash to Obama and the Kochs managed to capitalize on that. Part of this, too, was because the Democrats made the Kochs such boogeymen. They essentially drove a lot of Republicans into their arms.

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How The Koch Brothers Remade America's Political Landscape