The US administration says the conflict with Iran has effectively ended under a ceasefire, a position that could allow it to avoid seeking congressional authorisation under the War Powers Resolution.
The US Defense Secretary Pete Hegseth told senators the ceasefire paused the war, while a senior administration official said hostilities that began February 28 had ended and no fire had been exchanged since the April 7 truce.
The 1973 law requires congressional approval or withdrawal after 60 days of military action. The administration argues the clock is paused during a ceasefire and has until Friday to comply or extend the deadline.
Iran continues to control the Strait of Hormuz, while the U.S. maintains a naval blockade on Iranian oil shipments. Democrats and some Republicans have pressed for congressional approval, saying continued military action requires legislative authorisation and clear objectives.