If Congress wants to pass a law that the president does not support, it can still make that law by overriding a presidential veto with a two‑thirds vote in both the House of Representatives and the Senate.

Quick Scoop: Core Idea

  • Congress writes and passes a bill in the usual way (majority vote in the House and Senate).
  • The president can refuse to approve it by using the veto.
  • If that happens, Congress can hold another vote; if two‑thirds of each chamber vote for the bill, the veto is overridden and the bill becomes law anyway.

In short: strong supermajority support in Congress can overcome presidential opposition.

How It Plays Out Step by Step

  1. Bill passes Congress
    • A bill is introduced, debated, and approved by a simple majority in both the House and Senate.
  1. Bill goes to the president
    • The president can sign it (and it becomes law) or veto it (send it back with objections).
  1. President vetoes the bill
    • This is the formal way for the president to say “I do not support this.”
    • The bill is returned to Congress with a written explanation of the objections.
  1. Congress votes to override (the key move)
    • The House votes again on the bill; if at least two‑thirds say yes, it moves to the Senate.
 * The Senate then votes; again, it needs at least two‑thirds in favor.

 * If both chambers reach the two‑thirds threshold, the bill becomes law **even though** the president opposed it.
  1. If they fail to get two‑thirds
    • The veto stands and the bill “dies”; it does not become law.

Another Twist: Letting a Bill Become Law Without a Signature

Even when a president does not actively support a bill, they might just do nothing:

  • Under the Constitution, if the president takes no action on a bill for 10 days (excluding Sundays) while Congress is still in session , the bill becomes law without the president’s signature.
  • If Congress has adjourned during that 10‑day window, the inaction works as a “pocket veto,” and the bill does not become law.

So sometimes, a bill opposed by the president can still quietly become law if the president chooses not to fight it and Congress stays in session long enough.

Mini Story-Style Example

Congress passes a major environmental bill that the president strongly dislikes.
The president vetoes it and sends it back, explaining the objections.
Public pressure grows, and members of both parties in Congress decide the issue is too important to drop.
The House votes again and reaches more than two‑thirds in favor; the Senate follows and also hits the two‑thirds mark.
Despite the president’s opposition, the bill is now law—an example of Congress using its constitutional power to override a veto.

Checks and Balances Snapshot (HTML Table)

Here is a simple view of the options when the president does not support a bill:

html

<table>
  <thead>
    <tr>
      <th>Situation</th>
      <th>What Congress Can Do</th>
      <th>Outcome for the Bill</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td>President vetoes the bill</td>
      <td>Hold override votes; need two‑thirds in both House and Senate</td>
      <td>If both reach two‑thirds, bill becomes law despite veto; otherwise, bill fails</td>
    </tr>
    <tr>
      <td>President does nothing, Congress in session 10 days</td>
      <td>No special action required beyond original passage</td>
      <td>Bill becomes law without the president’s signature</td>
    </tr>
    <tr>
      <td>President does nothing, Congress adjourns within 10 days</td>
      <td>Must reintroduce and pass the bill again next session</td>
      <td>Bill does not become law (pocket veto)</td>
    </tr>
  </tbody>
</table>

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