Although the Federal Reserve has not announced a numerical inflation target, Ben Bernanke, the nominee to become Fed chairman in February, is on record favoring such a target. Although I am also on record favoring a formal numerical target, I believe the issue has not been a large one in the United States. Many observers believe that the Fed has been pursuing an inflation target range of 1-2 percent annual rate of increase of the core PCE price index. If the Fed does adopt a formal target in the future, I doubt very much that statistical tests for a regime break would be able to find one in an economic series such as an inflation index, employment or real GDP.