, May 1 -- US Senator Tim Kaine has expressed "serious constitutional concerns" that the White House may exceed the 60-day limit for military action in Iran without Congressional authorisation.

Speaking at a Senate Armed Services Committee hearing, Defence Secretary Pete Hegseth was questioned on whether the Trump administration intends to seek formal approval from Congress for continued military operations, reports Al Jazeera.

Under the US War Powers Resolution of 1973, a president can deploy military forces without Congressional approval for up to 60 days - a deadline in the ongoing Iran conflict that is set to expire on Friday.

Hegseth, however, argued that the timeline may be affected by the current ceasefire.

"We are in a ceasefi...