Switzerland's largest bank will pay $780 million to the United States for helping 17,000 U.S. citizens evade paying taxes on offshore revenue, the U.S. Justice Department said Wednesday. UBS AG will turn over the names of some U.S. clients to the department under an agreement with the Swiss Financial Markets Supervisory Authority and a deferred prosecution agreement with the United States. U.S. lawmakers accused UBS and Liechtenstein-based LGT Bank in July of shielding billions of dollars of taxable revenue from the Internal Revenue Service. On Wednesday, the Justice Department said that the bank helped to hide $20 billion in taxable...