Something bestowed on a U.S. president (5)
I believe the answer is:
grant
'president' is the definition.
(I know that Grant is a president)
'something bestowed on a u s' is the wordplay.
I cannot quite understand how this works, but
'a' could be 'an' and 'an' is present in the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for grant that I've seen before include "Give or allow as a privilege" , "yield" , "19th century president" , "Subsidy" , "Give (a right, property, etc)" .)