Federal Reserve Bank of San Francisco

The Danish bank found more than $200 billion of suspicious deals at its Estonian branch; merchants can opt out of the deal as another case on network rules continues.

Mary Daly succeeds John Williams, who left the bank earlier this year to run the Federal Reserve Bank of New York.

John Williams, a monetary policy expert, has been a critic of Wall Street culture and has voiced concerns about financial startups not offering equal access to credit.

The Federal Reserve is facing a backlash over its lack of diversity in key positions after it emerged this weekend that John Williams, the current president of the San Francisco regional branch, is a front-runner to succeed William Dudley as head of the powerful New York Fed.