The secret binder lay wedged in a hidden drawer inside a filing cabinet in his office on the Bahnhofstrasse in Zurich, the heart of the world of Swiss private banking. Martin Liechti, a former top private banker at Swiss bank giant UBS, privately called the binder his “CYA file,” a person briefed on the matter tells…

How Far Up Switzerland’s Biggest Bank Did U.S. Tax Evasion Scam Reach?