Excerpt: “Career Senior Executive Service (SES) officials are charged to ‘ensure that the executive management of the Government of the United States is responsive to the needs, policies, and goals of the Nation and otherwise is of the highest quality,’ as required by section 3131 of title 5, United States Code. SES officials have enormous influence over the functioning of the Federal Government, and thus the well-being of hundreds of millions of Americans. … The President’s power to remove subordinates is a core part of the Executive power vested by Article II of the Constitution and is necessary for the President to perform his duty to ‘take Care that the Laws be faithfully executed.’ Because SES officials wield significant governmental authority, they must serve at the pleasure of the President.”