A bill is “veto‑proof” when enough lawmakers support it that, even if the president (or governor) vetoes it, the legislature can still override the veto—usually by a two‑thirds vote in each chamber.

What “veto proof” really means

In U.S. practice, “veto‑proof” doesn’t describe a special kind of bill, but the vote margin behind it.

A bill is called veto‑proof when its supporters already have, or are virtually guaranteed, the supermajority needed to override an executive veto.

The constitutional mechanics

Under Article I, Section 7 of the U.S. Constitution, the president can return (veto) a bill passed by Congress instead of signing it into law.

Congress can then hold a new vote, and if at least two‑thirds of the members voting in both the House and Senate approve it, the bill becomes law despite the veto.

Vote numbers in practice

At the federal level, a veto‑proof majority usually means:

  • Two‑thirds of members voting in the House of Representatives.
  • Two‑thirds of members voting in the Senate.

State legislatures and some city councils often use the same two‑thirds standard, though some state constitutions set a different supermajority threshold.

Why people care if a bill is veto proof

Calling a bill veto‑proof signals:

  • Broad, cross‑party support that can overcome executive opposition.
  • Reduced leverage for the president or governor, because a veto is likely to be overridden.

In political coverage and forum discussions, this is why you often see debate over whether a controversial bill truly has “veto‑proof” backing or just a narrow majority.

Information gathered from public forums or data available on the internet and portrayed here.