The return veto reopens congressional decision rather than deleting selected language. Each chamber considers whether to override, and two-thirds in both are required. Failure in either chamber sustains the veto.

Because override coalitions are difficult, the veto shapes bargaining before presentment. Legislators may alter a provision when enough members support passage but too few will oppose the president after a veto. A threat has political effect without being a completed constitutional act.

Distinguish passage support from override support and identify the denominator stated in the scenario. Also separate a regular veto, which is returned and can be overridden, from a pocket veto, which depends on an adjournment preventing return and has no override process.

Video lesson: How a Bill Becomes a Law: Crash Course Government and Politics #9