Answer: potus

AnswerCrossword Clue
POTUSOval Office chief
POTUSC. in C.
POTUSBush, briefly
POTUSWhite House res.
POTUSDC VIP
POTUSD.C. VIP
POTUSC in C
POTUSNumero uno at the White House: Abbr.
POTUSAir Force One occupant, acronymically
POTUSAir Force One V.I.P.
POTUSOval Office V.I.P.
POTUSWhite House V.I.P.