How can Congress override a presidential veto?

The ability of Congress to override a presidential veto is established by the U.S. Constitution, which requires a two-thirds majority vote in both the House of Representatives and the Senate. This high threshold reflects the framers' intention to ensure that a substantial consensus is necessary to counter a presidential decision, demonstrating the significant balance of power between the legislative and executive branches. A two-thirds majority indicates strong bipartisan support for the legislation, making it clear that Congress believes the measure is crucial enough to warrant overriding the president's objections. This process is a vital check on presidential power, allowing Congress to assert its legislative authority when deemed necessary.