Representative in Capitol I harassed (10)
I believe the answer is:
politician
'representative' is the definition.
(thesaurus)
'in capitol i harassed' is the wordplay.
'harassed' indicates an anagram.
'in'+'capitol'+'i'='incapitoli'
'incapitoli' anagrammed gives 'POLITICIAN'.
(Other definitions for politician that I've seen before include "could be Congressman" , "Legislator" , "US senator?" , "One in Westminster" , "Eg, an MP" .)