The House voted unanimously on Thursday to approve a war powers resolution that, at least in theory, limits President Trump's use of military force in Iran.
The U.S. House of Representatives voted 224-194 to pass the resolution which would restrict Trump's ability to start a war against Iran unless he receives approval from Congress.
Pelosi and other Democratic lawmakers were furious that Trump didn't inform them before he ordered the strike.
The House resolution is non-binding meaning even if it is approved by the Senate, it would not go to Trump's desk for a signature.
"This is a statement of the Congress of the United States. I will not have that statement diminished by having a president veto it or not," said Pelosi during a press conference on Thursday.