While use of the official seal is regulated by the White House Graphics and Calligraphy Office, variations of the Seal are heavily used in popular culture. One example is the use of a variation of the seal as a logo. The rock bands Blink-182 and The Ramones both use logos that are similar to the Seal. The mega-hit television show The West Wing used an altered Presidential Seal as part of its opening sequence. But I believe as has been stated the seal continues to be regulated which may be why it is not seen on his web site.

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"What you hear in a great jazz band is the sound of democracy. “The jazz band works best when participation is shaped by intelligent communication.”
Harmony happens whenever different parts get to form a whole by means of congruity, concord, symetry, consistency, conformity, correspondence, agreement, accord, unity, consonance…….