10 across
A
few
missing
artist
in
essence,
US
president
(9)
A few missing artist in essence, US president (9)
hints
0
checks
0
hints
The definition is at the end of the clue.
How the clue works
The US president here is either Franklin D or Theodore Roosevelt. Take SEVERAL ('a few') and remove RA ('missing artist') to leave SEVEL, then tuck that inside ROOT ('essence') to give ROO-SEVEL-T.