While 7 million Americans call themselves cycling enthusiasts, the NGB only has 60,000 members.
The new rules stipulate that there will be "no political messages on signs or armbands," and "absolutely no disruptions of medals ceremonies."
The ruling by WADA's executive committee "means that Russia's flag, name and anthem will not appear at the Tokyo Games."
Kenworthy wants to compete in slopestyle, big air and halfpipe, which would have been difficult on a deep Team USA.
Scott was one of the most outspoken players against golf's return to the Olympic program in '16 at Rio.