Reportedly goes with American city (4)
I believe the answer is:
pisa
'city' is the definition.
(Pisa is an example)
'reportedly goes with american' is the wordplay.
'reportedly' becomes 'pis' (I can't explain this - if you can you should give a lot more credence to this answer).
'goes with' says to put letters next to each other.
'american' becomes 'a' (common abbreviation - e.g. in organisation names).
'pis'+'a'='PISA'
Can you help me to learn more?
(Other definitions for pisa that I've seen before include "There's a marked inclination here" , "Italian city with leaning tower" , "Site of the famous leaning tower" , "City on the River Arno" , "City with listed building" .)