Order bit of cash, hosting upper-class Republicans in DC (6,7)
I believe the answer is:
direct current
'dc' is the definition.
(synonyms)
'order bit of cash' is the wordplay.
'order' becomes 'direct' (directing is a kind of ordering).
'bit of cash' becomes 'current' (I am not sure about this - if you are sure you should believe this answer much more).
'direct'+'current'='DIRECT CURRENT'
'hosting upper-class republicans in' is the link.
This may not be right. Some or all of it may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for direct current that I've seen before include "DC in full" , "Electrical flow in one direction only" , "Electrically, DC" , "Electricity flow from, eg, battery" , "Electricity flowing in one direction only" .)