U.S. Is Ready to Protect Smaller Banks if Necessary, Yellen Says

Treasury Secretary Janet L. Yellen expressed confidence in the nation’s banks on Tuesday but said she was prepared to take additional action to safeguard smaller financial institutions as the Biden administration and federal regulators worked to contain fallout from fears over the stability of the banking system.

Ms. Yellen, seeking to calm nerves as the U.S. financial system faces its worst turmoil in more than a decade, said the steps the administration and federal regulators had taken so far had helped restore confidence. But policymakers were focused on making sure that...