What should I ask Zachary Carter?

Zachary is first and foremost the author of the New York Times bestselling The Price of Peace: Money, Democracy, and the Life of John Maynard Keynes.  Here is part of a broader bio:

Zach Carter is a senior reporter at HuffPost, where he covers economic policy and American politics. He is a frequent guest on television and radio whose work has appeared in The Washington Post, The New Republic, The Nation, and The American Prospect, among other outlets. Zach began his career at SNL Financial (now a division of S&P Global), where he was a banking reporter during the financial crisis of 2008. He wrote features about macroeconomic policy, regional economic instability, and the bank bailouts, but his passion was for the complex, arcane world of financial regulatory policy. He covered the accounting standards that both fed the crisis and shielded bank executives from its blowback, detailed the consumer protection abuses that consumed the mortgage business and exposed oversight failures at the Federal Reserve and other government agencies that allowed reckless debts to pile up around the world. ​Since joining HuffPost in 2010, Zach has covered the implementation of the 2010 Dodd-Frank financial reform law, political standoffs over trade policy and the federal budget, and the fight over the future of the Democratic Party. His feature story, “Swiped: Banks, Merchants and Why Washington Doesn’t Work for You” was included in the Columbia Journalism Review’s compilation Best Business Writing. ​

So what should I ask him?