US President getting little right, helping to create anomaly (10)
I believe the answer is:
aberration
'anomaly' is the definition.
(I've seen this before)
'us president getting little right helping' is the wordplay.
'us president' becomes 'Abe' (Abraham (Abe) Lincoln).
'getting' says to put letters next to each other.
'little' indicates taking the first letters.
'helping' becomes 'ration' (a ration is a serving or helping).
The initial letter of 'right' is 'r'.
'abe'+'r'+'ration'='ABERRATION'
'to create' acts as a link.
(Other definitions for aberration that I've seen before include "instability" , "departure from normal" , "Deviation from the accepted norm" , "Mental lapse" , "irregularity" .)