Love US medical program inflitrated by Republican weapons dealer (8)
I believe the answer is:
armourer
'love' is the definition.
The answer and definition can be both people as well as being singular nouns.
Maybe you can see a link between them that I can't see?
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for armourer that I've seen before include "Maker of weapons or mail" , "One tending livestock" , "old mailman?" , "Weapons supplier" , "Maker of defensive dress" .)