The IRS Inspector General is investigating possible criminal activity regarding "lost" emails relating to the targetting of conservative groups.
http://thehill.com/blogs/blog-briefing-room/234071-irs-watchdog-launches...
The Conservative Caucus is a public policy organization, contributions to which are not tax deductible. The IRS has determined TCC to be a 501(c)(4) organization, exempt from Federal income tax. TCC can receive corporate donations.