U.S. state - or Asian one! (7)
I believe the answer is:
indiana
'u s state' is the definition.
'indiana' can be an answer for 'state' (US state). I am not certain of the 'u s' bit.
'asian one' is the wordplay.
'asian' becomes 'Indian ' (India is in Asia).
'one' becomes 'a' (a thing is one thing).
'indian'+'a'='INDIANA'
'or' is the link.
Can you help me to learn more?
(Other definitions for indiana that I've seen before include "State between Illinois/Ohio" , "___ Jones, Harrison Ford hero - US state" , "Part of US" , "American state" , "___ Jones, action hero created by George Lucas" .)