The flag of the President of the United States consists of the presidential coat of arms on a dark blue background. While having the same design as the presidential seal since 1945, the flag has a separate history, and the designs on the flag and seal have at different times influenced each other. The flag is often displayed by the President in official photos, flown next to the coffin of the President in official funeral processions, and flown on the President's motorcade. The flag is never flown at half-staff. The current flag is defined in Executive Order :
The Color and Flag of the President of the United States shall consist of a dark blue rectangular background of sizes and proportions to conform to military and naval custom, on which shall appear the Coat of Arms of the President in proper colors. The proportions of the elements of the Coat of Arms shall be in direct relation to the hoist, and the fly shall vary according to the customs of the military and naval services.
Attached to the order were illustrations of the seal and flag, and also a set of "specifications" for the flag, which defines more precise colors for the elements than does the blazon of the coat of arms:
Flag base—blue.
Stars, large and small—white.
Shield:
Eagle:
Arrows—white, shaded gray.
Olive branch:
Rays—yellow.
Clouds—white, shaded gray.
Scroll—white with gray shadows.
Letters—black.
All dimensions are exclusive of heading and hems. Device to appear on both sides of flag but will appear reversed on reverse side of flag, except that the motto shall read from left to right on both sides.
During the committee discussions which eventually led to the Flag Act of 1818, an additional flag was proposed which was to indicate the President's presence at places he visited. The design divided the flag into four quarters (like the British royal standard): the upper left was the white stars on a blue background (same as the national flag); the lower left had a Goddess of Liberty on a white background; the upper right had an eagle emblem on a white background, and the lower right had the thirteen red and white stripes. This flag was not seriously considered and was not adopted.Samuel Chester Reid, who proposed this design, made a drawing of it years later which showed the eagle and Liberty in switched positions, and had the stars arranged in a larger star.