Someone in America's fair feature (3,5)
I believe the answer is:
big wheel
'someone' is the definition.
(big wheel is a kind of someone)
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for big wheel that I've seen before include "Fairground attraction - VIP" , "going round in London" , "Fairground attraction - important person" , "Important person - fair attraction" , "Fair experience" .)