The court’s conservative majority may be receptive to the argument that presidents have unlimited power to remove leaders of independent agencies.

The statute that created the job now filled by Mr. Dellinger, who was confirmed by the Senate in 2024, provides for a five-year term and says the special counsel “may be removed by the president only for inefficiency, neglect of duty or malfeasance in office.” But a one-sentence email to Mr. Dellinger on Feb. 7 gave no reasons for terminating him, effective immediately.