Ecco l'elenco pubblicato dall'Agenzia delle entrate Usa

Legal Actions to Date
Nov. 18, 2011 — Renzo Gadola, a citizen and resident of Switzerland, was sentenced to five years probation. Gadola pleaded guilty in December 2010 to assisting an American client in concealing an offshore bank account from the United States government. From 1995 through August 2008, he was employed as a private banker by UBS AG.

Aug. 4, 2011 — Gian Gisler, a former UBS AG banker, was charged with conspiring to hide more than $215 million offshore at various Swiss banks. Gisler had more than 38 U.S. taxpayer clients and allegedly opened and/or managed more than 60 hidden accounts on their behalf.

Aug. 2, 2011 — Martin Lack, a former UBS AG banker who is currently an independent asset manager, was charged with conspiracy to defraud the United States. Lack assisted U.S. customers to open and maintain secret bank accounts at a Swiss cantonal bank headquartered in Basel, Switzerland.

July 21, 2011 — Beda Singenberger, a Swiss financial advisor, was indicted for conspiring with U.S. taxpayers and others to hide more than $184 million in offshore Swiss bank accounts.

Aug. 21, 2009 — Former UBS banker Bradley Birkenfeld was sentenced to 40 months in prison. Birkenfeld worked as a private banker for UBS AG and assisted an American billionaire real estate developer evade paying $7.2 million in taxes.

Aug. 20, 2009 — Hansruedi Schumacher and Matthias Rickenbach were indicted for conspiring to assist wealthy American clients conceal their assets by establishing sham offshore entities. Schumacher was an executive manager at Neue Zuercher Bank (NZB), a private Swiss bank. Rickenbach was a Swiss attorney who advised U.S. clients.

Aug. 19, 2009 — The Justice Department and the IRS today announced that an agreement has been reached with the Swiss government regarding the John Doe summons filed against UBS on June 30, 2008.

Feb. 18, 2009 — UBS AG, Switzerland's largest bank, entered into a deferred prosecution agreement on charges of conspiring to defraud the United States by impeding the Internal Revenue Service (IRS).

Nov. 12, 2008 — Raoul Weil, a senior executive of a large Swiss bank, was charged with conspiring with other executives, managers, private bankers and clients of the banking firm to defraud the United States.

June 30, 2008 — The Justice Department filed papers seeking an order from a federal court in Miami, Fla., authorizing the Internal Revenue Service (IRS) to use a John Doe summons to request information from Zurich, Switzerland-based UBS AG about U.S. taxpayers who may be using Swiss bank accounts to evade federal income taxes.

May 13, 2008 — Banker Mario Staggl was indicted for conspiring with banker Bradley Birkenfeld to assist an American billionaire real estate developer evade paying $7.2 million in taxes by assisting in concealing $200 million of assets in Switzerland and Liechtenstein.

Dec. 12, 2007 — Igor Olenicoff, president and owner of Olen Properties Corporation, pleaded guilty to filing a false tax return for tax year 2002 related to foreign bank accounts he failed to disclose to the IRS. As part of his plea agreement, Olenicoff paid $52 million to the IRS for six years of back taxes, penalties and interest. Olenicoff was sentenced in April 2008, in Santa Ana, Calif., to two years probation and 120 hours of community service.

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