Swallowed fake news by Republican workshop (7)
I believe the answer is:
atelier
'workshop' is the definition.
(I've seen this in another clue)
'swallowed fake news by republican' is the wordplay.
'swallowed' becomes 'ate' (swallow can mean to eat).
'fake news' becomes 'lie'.
'by' says to put letters next to each other.
'republican' becomes 'R' (abbreviation in US politics).
'ate'+'lie'+'r'='ATELIER'
(Other definitions for atelier that I've seen before include "Artist's workroom" , "Artist's workshop, studio" , "Designer's workshop" , "room for artist" , "Artist's studio (French)" .)