Pawnbroker succeeded given a million in America (5,3)
I believe the answer is:
uncle sam
'america' is the definition.
(I've seen this before)
'pawnbroker succeeded given a million' is the wordplay.
'pawnbroker' becomes 'uncle' (old-fashioned term for a pawnbroker).
'succeeded' becomes 's' (genealogical abbreviation).
'given' says to put letters next to each other.
'million' becomes 'm' (abbreviation).
'uncle'+'s'+'a'+'m'='UNCLE SAM'
'in' is the link.
(Other definitions for uncle sam that I've seen before include "Iconic male relative of USA" , "America personified" , "'Relative in the US Government (5,3)'" , "Iconic American male relative" , "Iconic male relative for America" .)