While everyone is howling about IRS extra scrunity of these specific groups of 501(c)4 applications
I think that I've figure out the real reason(s) that all of these so-called-Tea Party- filings to the IRS for 501(c)4 ( social welfare org) exempt tax status is not at all about being able to, perhaps to give to the political process, i.e., Citizen United, but to apply for Government Grants.
Think about it, These are people who are against everything "Government", but have no problems at getting as much "Government Funds", i.e., Grants, in the form of the lie for the "social welfare of the community", primarily engaged in promoting in some way the common good and general welfare of the community!? Yeah right.
Furthermore, Whom ever the IRS personal that took it upon themselves to actually look into all of these filings with certain "keywords" to further investigate, were doing his/her job. When an influx of a certain type of such and such all of a sudden start showing up, and there do seem to a pattern to these such and such, it'll always be a WTF moment.