They've been pushing everything from hidden offshore accounts, bogus domestic trusts and discredited "tax protester" arguments (say, that the income tax isn't legal) to abusive insurance, deferred compensation and charitable deduction schemes.

FORBES: The IRS Wants You To Fess Up

But the biggest time-bomb hidden in Japanese accounts is the horrifying amount of unfunded pension obligations that have been piling up and now threaten to topple many firms.

ECONOMIST: Worse to come

The Williams decision involves facts that predate the current IRS efforts to encourage taxpayers to disclose unreported foreign bank accounts, and its efforts to prosecute those who keep their accounts hidden.

FORBES: The FBAR Penalty: One Court Pushes Back Against the IRS

And personal accounts help eliminate the subsidies hidden in current unemployment-insurance schemes.

ECONOMIST: Against the day when you lose your job

They are also a bit fed up with perusing Kenya's national accounts in order to detect hidden plans by the ruling elite to advance its own political cause.

ECONOMIST: Kenyan gloom | The

Even they were not excited to take on any of their former colleagues accounts, for fear of the ghosts hidden behind the walls.

FORBES: The Olympus Fraud Dissected

If an individual falsifies his or her tax claim by concealing their income in offshore accounts, banking secrecy laws in countries like Switzerland have in the past helped to keep that income hidden by making it a crime for the banks and their employees to disclose information about clients.

FORBES