Confusion about Oregon attack (2,3)
I believe the answer is:
go for
'attack' is the definition.
(go for can mean to attack)
'confusion about oregon' is the wordplay.
'confusion' becomes 'fog' (fog is a kind of confusion).
'about' shows that the letters should be reversed in order.
'oregon' becomes 'or' (abbreviation).
'fog' backwards is 'gof'.
'gof'+'or'='GO FOR'
(Other definitions for go for that I've seen before include "Attack (someone), decide on (an option)" , "Choose" .)