The tax agency received information on 4,000 UBS account holders through its "treaty request" with the bank;

国税局曾通过它与瑞士银行的“协定要求”而获得4000名瑞士银行账户持有者的信息；

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The mere fact that the IRS has served a John Doe summons, made a treaty request or has taken similar action does not make every member of the John Doe class or group identified in the treaty request, or other action ineligible to participate.

FORBES: Foreign Asset Reporting Update

"The United States has never denied an extradition request from the UK under the treaty, " he said.

BBC: Extradition laws are 'fair', US ambassador tells MPs