How can a president use a line-item veto?
Aonly through an amendment to the constitution
Bwhen congress cannot agree on a bill
Cby not signing or vetoing a bill within ten days
Dwhen congress overrides a veto
Aonly through an amendment to the constitution
Bwhen congress cannot agree on a bill
Cby not signing or vetoing a bill within ten days
Dwhen congress overrides a veto