What constitutional issue is being debated regarding the president's power to remove agency heads?

The debate centers on whether statutory language limiting a president's ability to fire certain federal employees is constitutional. Kerry Urban explains that while some laws state officials can only be removed for specific reasons like inefficiency or malfeasance, the Supreme Court has twice ruled that limiting a president's power to remove singular directors of executive agencies is unconstitutional. The fundamental question is whether a president should be forced to retain agency heads who don't align with their administration's vision, as this potentially undermines executive authority. The Trump administration is currently appealing to the Supreme Court for clarification on this executive power.