Final answer:
A motion to reconsider cannot be applied to the override of a presidential veto, actions involving constitutional amendments once decided by a two-thirds vote of Congress, and decisions affecting external affairs, such as an ambassador's legal issues.
Step-by-step explanation:
The motion to reconsider is a parliamentary procedure that allows a legislative body to reconsider a vote on a motion that has already been decided. However, not all motions are eligible for reconsideration. There are certain votes on motions on which the motion to reconsider cannot be applied. These include:
A vetoed bill is overridden by a two-thirds vote. Once a legislative body has successfully overridden a presidential veto, that action is final and cannot be reconsidered.
Actions involving constitutional amendments, such as those described in Section 3 of the 14th Amendment, once decided by a determined threshold such as a two-thirds vote of each house of Congress, are also not subject to reconsideration.
Decisions that have entered into the realm of external affairs, such as the preparation of a State of the Union message or dealing with foreign dignitaries, like an ambassador being tried for a crime, cannot be reconsidered as they are usually beyond the scope of parliamentary procedure.