Liechtenstein Redux: IRS Investigating

I recently noted here that Sen. Levin has called for investigation of the apparent use by US taxpayers of banks in Liechtenstein to hide assets and avoid tax.  In an IRS release today, IR 2008-26 (Feb. 26, 2008) (available on BNA; not yet available at the IRS newsroom), the IRS advised that it is "initiating enforcement action" with respect to more than 100 U.S. taxpayers in connection with Liechtenstein accounts.  The release quotes acting commissioner Linda Staff as follows.

“We are determined to protect the United States tax system from abuse and ensure that taxpayers pay what they owe. We will use all our authority to fairly and effectively enforce our tax laws. It should be clear from recent events that there is no safe hiding place for the proceeds of tax avoidance and evasion.”