The hunt for money hidden in Swiss bank accounts by U.S. citizens has become a global chase, with prosecutors tracing records to Singapore, the Cook Islands and elsewhere as U.S. authorities increase the pressure on Swiss lenders to turn over evidence, according to officials. Kathryn Keneally, head of the Justice Department’s tax division, said in an interview that in the wake of a guilty plea to criminal charges by Credit Suisse Group AG, the U.S. expects to collect more evidence pointing to suspect accounts beyond Switzerland’s borders.