That is literally the IRS's job. IRS funding at the margin directly increases or decreases tax revenues, because they have more or less resources to spend pursuing tax evasion.
Well if they contract out the chain analytics work to the most connected firms, I wouldn't be surprised if we found out that russian hackers are the ones behind helping americans launder their bitcoins/ether…
Maybe Equifax has some engineers working on this right now for them!
http://www.cnn.com/2014/07/18/politics/irs-scandal-fast-fact...