As was widely expected, Fed policymakers on Wednesday left the central bank's overnight rate unchanged at a range of 4.25% to 4.5%.

The U.S. central bank held interest rates steady on Wednesday and Federal Reserve Chair Jerome Powell's comments after the decision undercut confidence that borrowing costs would begin to fall in September,

Fed Chair Jerome Powell said the economy is solid — and that it's also too early to tell how tariffs will affect it.