The Seal of the President of the United States.  The blazon is defined in Executive Order 10860 as:

 The Coat of Arms of the President of the United States shall be of the following design:SHIELD: Paleways of thirteen pieces argent and gules, a chief azure; upon the breast of an American eagle displayed holding in his dexter talon an olive branch and in his sinister a bundle of thirteen arrows all proper, and in his beak a white scroll inscribed E PLURIBUS UNUM sable.CREST: Behind and above the eagle a radiating glory or, on which appears an arc of thirteen cloud puffs proper, and a constellation of thirteen mullets argent.The whole surrounded by white stars arranged in the form of an annulet with one point of each star outward on the imaginary radiating center lines, the number of stars conforming to the number of stars in the union of the Flag of the United States as established by chapter 1 of title 4 of the United States Code.The Seal of the President of the United States shall consist of the Coat of Arms encircled by the words SEAL OF THE PRESIDENT OF THE UNITED STATES
Extracted from PDF version of Federal Assistance for Impacted Communities guide, archived here, with some small cleanups.
U.S. Government