When displayed either horizontally or vertically against a wall, the union should be uppermost and to the flag's own right (that is, to the observer's left.) When displayed in a window the flag should be displayed in the same way, with the union or blue field to the left of the observer in the street.
The canton of the flag (the blue field with 50 stars) should always be to the observers left except:
1) when displayed on a casket; 2) when displayed as a decal on the right side of a vehicle (bus, truck, plane, etc.); 3) when worn as a patch on the right arm (but use on the left arm is preferable).
No other flag or pennant should be placed above or, if on the same level, to the right of the flag of the United States of America. The exception to this rule is that a church pennant may be flown above the flag during a church service conducted at sea by a naval chaplain for personnel of the Navy.
No person shall display the flag of the United Nations or any other national or international flag above, or in a position of superior prominence or honor to, or in place of, the flag of the United States at any place within the United States or any territory or possession thereof; provided, that nothing in this section shall make unlawful the continuance of the practice heretofore followed of displaying the flag of the United Nations in a position of superior prominence or honor, and other national flags in position of equal prominence or honor, with that of the flag of the United States at the headquarters of the United Nations.