The U.S. dollar inched up Tuesday, recovering from Monday's losses as investors await the monthly consumer inflation report. Dollar strength was tested by a Fed investigation into Chair Jerome Powell, which raised concerns about the central bank’s independence. Powell defended the Fed’s autonomy, emphasizing that policy decisions will be driven by economic data. Former Fed officials, including Republicans, have publicly supported Powell, easing some market worries.

Investors anticipate the upcoming CPI report, which is expected to show a 2.7% year-over-year increase, matching November's pace. Analysts at ING suggest the dollar could strengthen further if the investigation is dropped, as markets might view Powell as more legitimized to adopt a hawkish stance. The yen experienced a sharp decline, pressured by reports that Prime Minister Sanae Takaichi may call a snap election.

This speculation suggests an election victory could boost Takaichi's mandate for expansionary fiscal policy, adding to downward pressure on the yen. In Europe, the euro maintained previous gains, trading largely unchanged. The sterling market is alert for any hints from the divided Monetary Policy Committee, with upcoming data releases expected to influence movements.

The dollar's recovery ahead of the CPI report reflects investor confidence in the Fed’s ability to navigate current challenges, despite political pressures.