12/16/2012 04:50 pm ET Updated Dec 18, 2012

Karl Rove's Crossroads GPS Under Scrutiny

In a confidential 2010 filing, Crossroads GPS — the dark money group that spent more than $70 million from anonymous donors on the 2012 election — told the Internal Revenue Service that its efforts would focus on public education, research and shaping legislation and policy.

Read more on ProPublica