For your information:
U.S. Flag Code (4 US Code 1)
Sec. 8. - Respect for flag
(j) 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.
That being said, my referee jersey has a flag patch on the back, I wear a flag patch on my laboratory coat at work every day, and I display the flag at home on every national, and state holiday, as well as every time a Connecticut soldier, sailor, airman, or marine, gets killed in Iraq, or Afghanistan, so far 41 flag displays:
http://www.courant.com/news/local/hc...-utility-local