This question is regarding the theoretical limits and ability of the power of the President of the United States.
Under a strong or absolute Unitary Executive Presidential powers framework, would there be any legal basis for the President being able to unilaterally execute or implement laws?
Speaking in terms of areas in which the executive branch is granted authority, take for example 31 U.S. Code § 321 regarding the authority of the Secretary of the Treasury:
(a)The Secretary of the Treasury shall—
(1)prepare plans for improving and managing receipts of the United States Government and managing the public debt;
(2)carry out services related to finances that the Secretary is required to perform;
(3)issue warrants for money drawn on the Treasury consistent with appropriations;
(4)mint coins, engrave and print currency and security documents, and refine and assay bullion, and may strike medals;
(5)prescribe regulations that the Secretary considers best calculated to promote the public convenience and security, and to protect the Government and individuals from fraud and loss, that apply to anyone who may—
(A)receive for the Government, Treasury notes, United States notes, or other Government securities; or
(B)be engaged or employed in preparing and issuing those notes or securities;
Or take 28 U.S. Code § 516 regarding United States litigation authority:
Except as otherwise authorized by law, the conduct of litigation in which the United States, an agency, or officer thereof is a party, or is interested, and securing evidence therefor, is reserved to officers of the Department of Justice, under the direction of the Attorney General.
Would the President themself be able to for example "manage the public debt", "issue warrants for money drawn on the Treasury consistent with appropriations", "mint coins, engrave and print currency", or directly engage in litigation on behalf of the United States?
(I am speaking to traditional executive departments and officers falling under pure executive control, not independent agencies which may be insulated due to carrying out quasi-judicial or quasi-legislative tasks such as outlined in Humphrey's Executor v. U.S.)
Taking the Constitution's provisions that the "executive Power shall be vested in a President of the United States of America" and they "shall take Care that the Laws be faithfully executed". U.S. Const. Art II Sections 1&3. Could it be argued the vesting of said executive power in the President alongside the Congressional granting of such authority to the the executive branch would allow for the President to unilaterally execute or otherwise implement laws or the abilities of other people or entities within the executive branch?
(Even considering factors like Youngstown, given the President would in theory be acting to an "implied authorization" since such powers are granted to the executive branch by Congress would it be possible to square such abilities and actions? “[W]hen the President acts pursuant to an express or implied authorization of Congress, his authority is at its maximum, for it includes all that he possesses in his own right plus all that Congress can delegate.” Youngstown, 343 U. S., at 635 (Jackson, J., concurring))
Apologies if the question is disjointed, I would be happy to elaborate if needed. Additionally, I'm not really asking regarding the implications or logistics of the President attempting to effectively administer laws themselves, since that would clearly be inefficient and likely problematic (nor am I advocating they should), I am merely curious as a question of legal authority if they would be able to, and the legal arguments counseling in favor/ against. Thank you!