President Donald Trump’s call for the “termination” of Federal Reserve Chair Jerome Powell landed Thursday as the Supreme Court is weighing a fast-moving appeal over two independent agencies that has increasingly become a proxy battle for control of the nation’s powerful central bank.

The provisional decision affects Gwynne Wilcox, a member of the National Labor Relations Board, and Cathy Harris, a member of the Merit Systems Protection Board.

The Supreme Court is allowing the Trump administration to oust two board members who oversee independent agencies, for now.