President Donald Trump has renewed his threat to remove Federal Reserve Governor Lisa Cook, escalating tensions between the White House and the central bank just hours after the US Supreme Court blocked the administration's attempt to fire her.

The development marks a significant escalation in the ongoing conflict over the limits of presidential authority over independent regulators.

The Supreme Court's ruling effectively halted the administration's immediate effort to oust Cook, a decision that has drawn sharp criticism from the White House.

Trump's subsequent threat to take "appropriate action" signals that the legal and political battle over the Fed's composition is far from over.

The confrontation raises fundamental questions about the central bank's operational independence and its ability to set monetary policy free from political interference.

Markets are closely monitoring the situation for any signs of policy disruption.