Audits are on-going year around.
I don't find any single audit suspicious. However in some (very rare) present cases we have simultaneous audits by numerous governmental agencies (e.g., IRS, EPA, OSHA, BATF and FBI). That is highly unusual, and that's an understatement.
Moreover, the audits were themselves conducted in a highly unusual manner. I'll confine my remarks to the IRS audit(s) because I've been in the profession for over 30 years and handled many IRS audits on behalf of taxpayer clients.
The IRS audit was an unannounced on-site audit. I have only seen one unannounced visit by the IRS and it involved a collection matter of a huge amount of back taxes by a taxpayer who was clearly doing everything legally, but perhaps not ethically, possible to avoid paying. This is primarily an intimidation tactic and one borne of frustration etc on the IRS's part. I.e., the guy wasn't cooperating in 'good faith'.
Other than intimidation there are very few good reasons outside of criminal tax evasion to show up unannounced. (E.g., if someone is lying about their assets in a collection or criminal tax dispute they might show up unannounced to verify assets, or lack thereof, such as expensive art, collectibles or automobiles that could be seized. If a criminal is warned (s)he can easily remove these to another location.)
Otherwise, if the IRS had to go onsite, which pertains to business audits, they will always announce it, arrange a schedule and provide a list of documentation (general ledgers, financials and various records etc) they want to examine. They want this info prepared and available prior to their arrival so time is not needlessly wasted.
In the case I mentioned of so many unusual audits there was no apparent purpose other than intimidation for the IRS to appear on site unannounced.
Where do you get the information that any of these people "exhibit tax dodging weasel tendencies wrt their political contributions"? Did you just pull that out of your you-know-what?
BTW: There is no such thing as a "tax dodging" regarding political contributions. They are not tax deductible. Furthermore, because they are not the IRS wouldn't likely be aware of them unless those contributions were reported on a tax exempt org's Form 990, in which case if that were done I'd say it's evidence of political targeting.
Individuals' tax returns are selected for examination based upon something called a DIF score: http://www.unclefed.com/Audit-Proofing/miscon2.html
So no, the process isn't as you describe. The one you describe would, IMO, be illegal.
Were I on the congressional committee I'd subpoena the DIF score of the individual and the cutoff score determined by the IRS at that time. But I doubt Congress is aware of such things.
Fern
Those current very rare cases involve whom, exactly?
The rest is just legalese to obfuscate the methods used to dodge taxes & exposure while using the money for political purposes. All of the Tea Party groups currently whining don't use their tax exempt contributions for political purposes? Really? What else do they do with it, pray tell?
Feed the hungry? Shelter the homeless?