Congress must vote to end it.
Vote to end Trump's war in Iran.
Occurrences
Evidence
The House approved a war powers resolution by a 215-208 vote to halt U.S. military action against Iran, with four Republicans joining Democrats.
Assessments
The House approved a war powers resolution to halt U.S. military action against Iran during Smith's current term, which substantively matches the promise to vote to end Trump's war in Iran. The supplied evidence does not name Smith in the roll call, so the attribution is inferential rather than direct, but the outcome itself was achieved in the relevant term.