structural:expansion, stylistic:style_transfer
In the United States (2008–present)

The day before the change was announced, on October 7, 2008, Chairman Ben Bernanke of the Board of Governors of the Federal Reserve System expressed some uncertainty about it, saying, "We're not quite sure what we have to pay in order to get the market rate, which includes some credit risk, up to the target. We're going to experiment with this and try to find what the right spread is." The Fed adjusted the rate on October 22, after the initial rate they set October 6 failed to keep the benchmark U.S. overnight interest rate close to their policy target, and again on November 5 for the same reason.