Again suggest America investing in wood after setback (8)
I believe the answer is:
resubmit
'again suggest' is the definition.
('submit' is an answer for 'suggest' so perhaps 'resubmit' is OK for 'again suggest')
'america investing in wood after setback' is the wordplay.
'america' becomes 'US' (United States).
'investing in' is an insertion indicator.
'wood' becomes 'timber' (I've seen this before).
'after setback' shows that the letters should be reversed in order.
'us' going into 'timber' is 'timbuser'.
'timbuser' backwards is 'RESUBMIT'.
(Other definitions for resubmit that I've seen before include "Send in again" , "surrender once again" , "Put forward again" , "give in yet again" .)