Oval Office override (4)
I believe the answer is:
veto
(Other definitions for veto that I've seen before include "Reject - vote (anag)" , "Refuse permission" , "An overriding negative vote" , "UN rejection" , "Right to reject a decision" .)
I believe the answer is:
veto
(Other definitions for veto that I've seen before include "Reject - vote (anag)" , "Refuse permission" , "An overriding negative vote" , "UN rejection" , "Right to reject a decision" .)