The American flag

When the flag is lowered, no part of it should touch the ground or any other object; it should be received by waiting hands and arms. To store the flag it should be folded neatly and ceremoniously.
The flag should be cleaned and mended when necessary.
When a flag is so worn it is no longer fit to serve as a symbol of our country, it should be destroyed by burning in a dignified manner.

Note: Most American Legion Posts regularly conduct a dignified flag burning ceremony, often on Flag Day, June 14th. Many Cub Scout Packs, Boy Scout Troops, and Girl Scout Troops retire flags regularly as well. Contact your local American Legion Hall or Scout Troop to inquire about the availability of this service.

Charles Thompson, Secretary of the Continental Congress, reporting to Congress on the Seal, stated:
"The colors of the pales (the vertical stripes) are those used in the flag of the United States of America; White signifies purity and innocence, Red, hardiness & valour, and Blue, the color of the Chief (the broad band above the stripes) signifies vigilance, perseverance & justice."
Also this from a book about the flag published in 1977 by the House of Representatives...
"The star is a symbol of the heavens and the divine goal to which man has aspired from time immemorial; the stripe is symbolic of the rays of light emanating from the sun."

The Law of the American flag

Public Law 94-344, known as the Federal Flag Code, contains rules for handling and displaying the U.S. flag. While the federal code contains no penalties for misusing the flag, states have their own flag codes and may impose penalties. The language of the federal code makes clear that the flag is a living symbol.

In response to a Supreme Court decision which held that a state law prohibiting flag burning was unconstitutional, Congress enacted the Flag Protection Act in 1989. It provides that anyone who knowingly desecrates the flag may be fined and/or imprisoned for up to one year. However, this law was challenged by the Supreme Court in a 1990 decision that the Flag Protection Act violates the First Amendment free speech protections.

Traditional guidelines call for displaying the flag in public only from sunrise to sunset. However, the flag may be displayed at all times if it’s illuminated during darkness. The flag should not be subject to weather damage, so it should not be displayed during rain, snow and wind storms unless it is an all-weather flag.

It should be displayed often, but especially on national and state holidays and special occasions.

The flag should be displayed on or near the main building of public institutions, schools during school days, and polling places on election days. It should be hoisted briskly and lowered ceremoniously.