They want to know what everybody's assets and investments are so they can use the asset forfeiture laws to seize them.
What do you think the NSA has been doing with all that data they have been collecting? They are documenting the federal crimes that people commit. There are so many federal laws now that the average person unknowingly commits three felonies a day (see Harvey A. Silverglate's book "Three Felonies a Day").
Ever downloaded a movie from the Internet? $250,000 fine and 5 years in prison.
One of these fine days we are going to wake up to discover that the feral government has seized the bank and investment accounts of half the population (the half that doesn't support Democrats) on the pretext of the long list of federal crimes the NSA has documented.
They don't have to prove anything. That's the beauty of asset forfeiture. All the government has to do is accuse somebody of something and take their stuff. Doesn't matter if any charges are ever filed. Once they seize it, you're never getting it back.
Ok. Then what?
You have nothing left to lose(if you are stupid enough to sit still for the shearing). What is your next move?
/johnny