Plot summary
An American is one of the victims of a bomb explosion in a restaurant in Saudi Arabia. Morejon uses the incident to accuse Elizabeth of fomenting terrorist actions through the nuclear peace deal that she made with Iran. He gathers votes on legislation that would not only prevent phase 2 of the talks with Iran but would undo the progress that she made in phase 1. The family of the killed American file a lawsuit against Elizabeth personally for the wrongful death of their son. Conrad tells Elizabeth to halt the talks with Iran until after the midterm elections.
Elizabeth explains to the family that their son was a CIA operative who was killed in service to his country. She also learns that a Saudi Arabian government official is paying for the lawsuit, and that Morejon is aware that Saudi Arabia is trying to influence the US talks with Iran. The family drops the lawsuit and the talks with Iran resume. Henry takes a position as head of a new department of military ethics. Jason wins a National Merit scholarship.
Credits
Adapted from Wikipedia contributors, Madam Secretary season 4. HTML formatting and reference markers removed.