Charge account suggested by American middlemen (6)
I believe the answer is:
accuse
'charge' is the definition.
(charge in court)
'account suggested by american middlemen' is the wordplay.
'account' becomes 'acc'.
'suggested by american middlemen' becomes 'use' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'acc'+'use'='ACCUSE'
Can you help me to learn more?
(Other definitions for accuse that I've seen before include "Make charge against" , "Charge with, indict" , "make charges" , "Indict, blame wrongdoing on" , "Charge with wrong-doing" .)