Everything you need to know about the four numbers and one letter that are frequently mentioned in reports about the IRS's targeting of conservative groups.
BY SEAN SULLIVAN
May 13, 2013 at 1:51 pm
The news that the Internal Revenue Service flagged conservative groups for extra scrutiny has drawn renewed public attention to 501(c)(4) organizations, which play a very influential role in politics. So, what the heck is a 501(c)(4), and why do such groups matter in electoral politics? If you're curious, keep reading.
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