The Federal Reserve kept its key rate unchanged Wednesday yet almost half the central bank's policymakers said they could support a rate hike later this year, an unexpectedly aggressive outcome that would disappoint President Trump and suggests heightened concerns about persistent inflation.

In an unusually short statement after their two-day meeting, Fed officials dropped language that had suggested their next move would be to cut their key rate.

The brief statement likely reflects the influence of new chair Kevin Warsh, appointed by Trump, who has previously criticized the Fed for commenting too broadly on the economy.