http://www.dailykos.com/story/2011/05/10/974931/-Breaking:-IRS-to-go-HARD-after-American-Crossroads-Priorities-USAAccording to Ben Smith at Politico, the IRS is about to do something HUGE with regards to anonymous funding. This may end up killing (or at least drying up a good chunk of their funding) before they get off the ground in 2012.
IRS Gift Tax Move Could Hit New Anonymous Groups
Here's the situation. Normally, contributions to 501c4s, c5s and c6s are generally not taxable gifts much like any political donation. Things may be about to change with the IRS increasingly focusing in on this type of donation. This may dry up the funding on all sides both Dems and Republicans.
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This essentially means that donations to these types of organizations could hit as high as 35% in terms of taxable income. It would have to be reported to the IRS. This would make those rich individuals (who dislike taxes) think twice before contributing to these groups as their funding would be taxed. The IRS is going to focus in particular on HIGH INCOME FOLKS (Think Koch Brothers, Soros, etc.)
MORE at the link --