Emigre’s corrupt government (6)
I believe the answer is:
regime
'government' is the definition.
('regime' can be a synonym of 'government')
'emigre's corrupt' is the wordplay.
'corrupt' is an anagram indicator.
'emigre' anagrammed gives 'REGIME'.
(Other definitions for regime that I've seen before include "Government - administration" , "Command" , "Authoritarian system" , "Form of rule" , "Ruling system" .)