Not entirely right to involve US lawyer for traitor (5)
I believe the answer is:
judas
'traitor' is the definition.
(I know that Judas is a type of traitor)
'not entirely right to involve us lawyer' is the wordplay.
I cannot really understand how this works, but
'lawyer' could be 'da' (abbreviation for District Attorney) and 'da' is found within the answer.
'right' could be 'jus' (I've seen this before) and 'jus' is found in the remaining letters.
No letters remain.
This explanation may well be incorrect...
'for' acts as a link.
Can you help me to learn more?
(Other definitions for judas that I've seen before include "Arch-traitor of the Gospels" , "Peep-hole" , "Biblical betrayer" , "Disloyal person" , "The most famous betrayer of all" .)