The flag should never be dipped to any person or thing, unless it is the ensign responding to a salute from a ship of a foreign nation. This is sometimes misreported as a tradition that comes from the 1908 Summer Olympics in London, where countries were asked to dip their flag to King Edward VII; American team flag bearerRalph Rose did not follow this protocol, and teammate Martin Sheridan is often, though apocryphally, quoted as proclaiming that "this flag dips before no earthly king."
No part of the flag should ever be used as a costume or athletic uniform. However, a flag patch may be affixed to the uniform of military personnel, firemen, policemen, and members of patriotic organizations.
The flag should never be used as a receptacle for receiving, holding, carrying, or delivering anything.
The flag should never touch anything physically beneath it.
The flag should never be used as wearing apparel, bedding or drapery. It should never be festooned, drawn back, nor up, in folds but always allowed to fall free.
The flag should always be permitted to fall freely.
The flag should never be carried flat or horizontally.
The flag should never be used for advertising purposes in any manner whatsoever. It should not be embroidered on such articles as cushions or handkerchiefs and the like, printed or otherwise impressed on paper napkins or boxes or anything that is designed for temporary use and discard. Advertising signs should not be fastened to a staff or halyard from which the flag is flown.
The flag should never be upside down, except to signal distress or great danger.
When displayed vertically against a wall, the union should be to the observer’s left.
History
Prior to Flag Day, June 14, 1923, neither the federal government nor the states had official guidelines governing the display of the United States' flag. On that date, the National Flag Code was constructed by representatives of over 68 organizations, under the auspices of the National Americanism Commission of the American Legion. The code drafted by that conference was printed by the national organization of the American Legion and given nationwide distribution. On June 22, 1942, the code became Public Law 77-623; chapter 435. Little had changed in the code since the Flag Day 1923 Conference. The most notable change was the removal of the Bellamy salute due to its similarities to the Hitler salute. In 1990, the U.S. Supreme Court ruled in United States v. Eichman that the prohibition of desecration of the U.S. flag conflicts with the First Amendmentright to freedom of speech and is therefore unconstitutional. The Freedom to Display the American Flag Act of 2005 prohibits real estate management organizations from restricting homeowners from displaying the Flag of the United States on their own property. The Army Specialist Joseph P. Micks Federal Flag Code Amendment Act of 2007 added a provision to allow governors, or the mayor of the District of Columbia, to proclaim that the flag be flown at half-staff upon the death of a member of the Armed Forces from any State, territory, or possession who died while serving on active duty. The provision directs federal facilities in the area covered by the governor or mayor of the District of Columbia to fly the flag at half-staff consistent with such proclamations. The allows the military salute for the flag during the national anthem by members of the Armed Forces not in uniform and by veterans.