What can override a Presidential veto of a bill?

• A. 2/3 approval in both chambers
• B. A national referendum
• C. A simple majority in one chamber
• D. Executive order

Answer: (A)

When the President vetoes a bill, overturning that veto requires broad congressional support: a two-thirds vote in each chamber. If both the House and the Senate pass the bill again with two-thirds margins, it becomes law without the President’s signature. A national referendum isn’t a mechanism for Congress to override a veto. A simple majority in one chamber isn’t enough—the threshold is two-thirds in both chambers. An executive order can’t override a veto; it's an executive action and cannot negate a veto.