Kevin Warsh, a former Federal Reserve governor, spoke at the Jackson Hole economic symposium on Friday, stating that the central bank must be confident underlying inflation is returning to its 2 percent target at sufficient speed. Multiple sources reported his remarks on financial conditions and the central bank's responsibility for elevated prices, though some incorrectly identified him as the current chairman. Futures markets priced in a 57.4 percent probability of a rate hike following the event.