The US President cannot send troops to or against Iran without Congress approval, the House of Representatives says. The exception is defensive action.
On Thursday, January 9 the House of Representatives of the US Congress, adopted a resolution not allowing President Donald Trump to take sole decisions on military operations against Iran. According to this document, the president must coordinate such decisions with parliament.
Among other things, the resolution states that without the express approval of Congress, the president is not entitled to send troops to Iran or for operations against Iran, except when it comes to defensive actions in the "immediate armed attack" on American targets.
Nancy Pelosi: Killing Soleimani Is a Provocation
Three days earlier, the House Speaker Nancy Pelosi called the assassination of Iranian General Suleimani a provocative military strike and announced that the House of Representatives would vote this week on a resolution designed to limit President Trump’s military actions against Iran.
At his turn, Donald Trump tightened sanctions against Iran, but did not respond with military actions to missile attacks on air bases in Iraq, carried out on January 8 immediately after the funeral of General Qasem Soleimani. On the eve Trump threatened to strike 52 "cultural sites" of Iran in case of hostile actions.
The commander of the elite division of Al-Quds of the Islamic Revolutionary Guards Corps (IRGC), Lieutenant General Qasem Soleimani, was killed on January 3 by an American missile strike at Baghdad International Airport. Afterwards the relations between the United States and Iran sharply escalated.