Advocates at Supreme Court overact, twisting points, ignoring time (9)
I believe the answer is:
champions
'advocates' is the definition.
(champion is a kind of advocate)
'overact twisting points ignoring time' is the wordplay.
'overact' becomes 'cham' (I can't explain this - if you can you should believe this answer much more).
'twisting' indicates an anagram.
'ignoring' indicates named letters should be taken away.
'time' becomes 't' (abbreviation).
'points' with 't' removed is 'poins'.
'poins' is an anagram of 'pions'.
'cham'+'pions'='CHAMPIONS'
'at supreme court' is the link.
I am not very happy about this link. Some or all of it may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for champions that I've seen before include "Winners in competition" , "best ones" , "Defends" , "Pinch Amos to find successful competitors" , "They win first place in competitions" .)