Doug Hughes said he sees his future as working for "the cause of getting a Congress — not more liberal, not more conservative — but a Congress that is working for the people." Peter Overby/NPR hide caption

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A gyrocopter rests April 15 on the west lawn of the U.S. Capitol in Washington. Doug Hughes, a 61-year-old postal worker from Ruskin, Fla., landed the lightweight helicopter on the Capitol lawn to promote campaign finance reform. He's scheduled to enter pleas to multiple charges Thursday. Chip Somodevilla/Getty Images hide caption

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Candidates, and "un-candidates," for the presidency are slicing and dicing campaign-finance law, testing the boundaries of what's legal. TaxCredits.net via Flickr hide caption

itoggle caption TaxCredits.net via Flickr

"Exploratory" Republican presidential candidate Jeb Bush speaks April 17 at the First in the Nation Republican Leadership Conference in Nashua, N.H. His super PAC — Right to Rise — is aiming to raise $100 million dollars by June 1. Brian Snyder/Reuters/Landov hide caption

itoggle caption Brian Snyder/Reuters/Landov

Can candidates courting billionaires count as corruption, even if there are no explicit strings attached? Some activists see the campaign contributions of the super-rich as a problem, regardless of whether "quid pro quo" deals are made. Here, activists protest the political influence of the wealthy Koch Brothers near David Koch's Manhattan apartment on June 5, 2014. Spencer Platt/Getty Images hide caption

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David Barrows, of Washington, D.C., waves a flag with corporate logos and fake money during a rally against money in politics outside the Supreme Court in 2013. Chip Somodevilla/Getty Images hide caption

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Former Secretary of State Hillary Clinton speaks at the Clinton foundation's Clinton Global Initiative conference with her husband, Bill, and daughter, Chelsea, looking on. Michael Loccisano/Getty Images hide caption

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"We need to fix our dysfunctional political system and get unaccounted money out of it, once and for all, even if that takes a constitutional amendment," Hillary Clinton said at Kirkwood Community College in Iowa Tuesday. Michael B. Thomas/AFP/Getty Images hide caption

itoggle caption Michael B. Thomas/AFP/Getty Images