Court request collected works — has to involve President first (6,6)
I believe the answer is:
habeas corpus
'court request' is the definition.
The definition and answer can be both related to communication as well as being singular nouns.
Maybe they are linked in a way I don't understand?
'collected works has to involve president first' is the wordplay.
'collected works' becomes 'corpus' (I've seen this before. I am not sure about the 'collected' bit.).
'to involve' means one lot of letters goes inside another (inserted letters get involved).
'president' becomes 'Abe' (Abraham (Abe) Lincoln).
'first' says to put letters next to each other.
'has' going around 'abe' is 'habeas'.
'corpus' put after 'habeas' is 'HABEAS-CORPUS'.
Can you help me to learn more?
(Other definitions for habeas corpus that I've seen before include "Writ for investigation of legality of detention" , "Writ ordering a prisoner to be brought before a judge - purchase ASBO (anag)" , "No-arbitrary-imprisonment principle" , "demand from court" .)