The U.S. dollar was firmer against major currencies on Wednesday after the Federal Reserve left interest rates unchanged as widely expected, but gave scant clues about further reductions in borrowing costs this year.

The dollar was edging higher ahead of the Federal Reserve's policy meeting later as the central bank is widely expected to pause interest-rate cuts. The Fed could defy strong labor market data and expectations for strong growth by sounding less cautious about the pace of future rate cuts,