Proposed Amendment to the United States Constitution.

The occupant of the Office of President of the United States is required to protect and uphold the Constitution. Accordingly, the President is subject to all the laws of these United States, just like any other citizen, without exception. In particular, this amendment includes, but is not limited to, all laws concerning graft, corruption, theft, fraud, election interference, voter suppression, sedition and insurrection. The Constitution shall not be interpreted to confer any form of immunity on the office of the President, and no other provision of the Constitution shall be interpreted to supersede this amendment.

Edit 7/29/24: Rep. Joe Morelle (NY) introduced a bill in thr U.S. House to create such an amendment. I have attached the relevant text of the bill below.

JOINT RESOLUTION 
Proposing an amendment to the Constitution of the United States providing that there is no immunity from criminal prosecution for an act on the grounds that such act 
was within the constitutional authority or official duties of an individual, and providing that the President may not grant a pardon to himself or herself.

‘‘ARTICLE—

SECTION 1. No officer of the United States, including the President and the Vice President, or a Senator or Representative in Congress, shall be immune from criminal prosecution for any violation of otherwise valid  Federal law, nor for any violation of State law unless the alleged criminal act was authorized by valid Federal law, on the sole ground that their alleged criminal act was within the conclusive and preclusive constitutional authority of their office or related to their official duties, except for Senators and Representatives acting pursuant to the first clause of the sixth section of the first article.

 ‘‘SECTION 2. The President shall have no power to grant a reprieve or pardon for offenses against the United States to himself or herself.

‘SECTION 3. This amendment is self-executing, and Congress shall have the power to enact legislation to facilitate the implementation of this amendment.’’.