Treasury Secretary Janet L. Yellen said on Sunday that regulators were working throughout the weekend to deal with the fallout from the collapse of Silicon Valley Bank but tried to assure the public that the American banking system is “safe and well capitalized.”The Federal Deposit Insurance Corporation said on Friday that it would take over Silicon Valley Bank, putting nearly $175 billion in customer deposits under the regulator’s control. The bank’s failure, the second largest in U.S. history, has raised concerns that other financial firms could suffer the same fate as rising interest rates put pressure on the banking sector.Ms. Yellen, speaking on the CBS program “Face the Nation,” would not say what steps regulators might take to protect depositors, including many whose funds are now frozen at the bank. But she said she was mindful that many small businesses are counting o …
