Peter OverbyAs NPR's correspondent covering campaign finance and lobbying, Peter Overby totes around a business card that reads Power, Money & Influence Correspondent. Some of his lobbyist sources call it the best job title in Washington.
Tea Party activists gather on Capitol Hill in 2011. A surge in applications for 501(c)(4) status in recent years has revealed sometimes murky and contradictory rules governing the political activities of tax-exempt groups.
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