What is the process by which Congress can override a presidential veto?

The process by which Congress can override a presidential veto requires a two-thirds majority vote in both the House of Representatives and the Senate. This high threshold is intentionally set to ensure that there is significant bipartisan support for legislation, indicating that Congress strongly believes the legislation should be enacted despite the president's objections.

The requirement for a two-thirds majority ensures that only those bills which have considerable backing from both chambers of Congress can become law against the president's wishes. This process reflects the framers' intention to balance the power between the legislative and executive branches, allowing Congress to assert its authority while also recognizing the president's role in the legislative process.

Other options do not correctly outline the constitutional procedure for overriding a veto. A simple majority, for instance, is insufficient to override a veto and reflects a lower level of consensus than intended by the framers. Similarly, the requirement of a unanimous vote or a simple majority solely in the House fails to align with the Constitution’s mandate for a two-thirds vote in both chambers.