Trump beginning to be rejected by America over collected writings (5)
I believe the answer is:
sutra
'trump beginning' is the definition.
The definition suggests a singular noun which matches the answer.
'rejected by america over collected writings' is the wordplay.
'rejected' says the letters should be written in reverse.
'by' is a charade indicator (letters next to each other).
'america' becomes 'US' (United States).
'over collected writings' becomes 'art' (I can't explain this - if you can you should believe this answer much more).
'us' put after 'art' is 'artus'.
'artus' reversed gives 'SUTRA'.
'to be' is the link.
Can you help me to learn more?
(Other definitions for sutra that I've seen before include "Rule or aphorism in Sanskrit literature" , "Ornamental arm band" , "Buddhist literature" , "Collection of Hindu or Buddhist sayings" , "The Kama ..... is a Sanskrit sex manual" .)