The White House Office of Management and Budget (OMB) delivered the funding request in a letter to House of Representatives Speaker Mike Johnson. In the letter, the budget office stated, “Most of this request will address urgent needs related to Operation Epic Fury (OEF),” referring to the ongoing war.

The Pentagon is set to receive the largest share of the fund, with $67 billion directed to the Defense Department. This includes $21 billion for munitions, $17.3 billion for operational costs, and $12.1 billion for classified programmes.

While Washington and Tehran are currently observing a ceasefire, the OMB letter noted that the Pentagon needs the funds to “rebuild stocks” following its military strikes.

The request arrives as several Congressional Republicans express skepticism over a peace plan that Trump agreed to last week with Iran.

An additional $300 million is requested to bolster security at U.S. embassies and diplomatic outposts in the Middle East and South Asia, following attacks on those facilities earlier in the war.

The proposal also features unrelated spending, including $11 billion for U.S. farmers and $1.4 billion to tackle the Ebola outbreak in Central Africa.

However, the multi-billion-dollar proposal faces strong resistance from lawmakers. The conflict remains deeply unpopular with voters as midterm elections appear this November.

The emergency demand follows a historic legislative blow to the White House. On Tuesday, the Republican-controlled Senate passed a largely symbolic resolution restricting the president's war powers. It marked the first time in U.S. history that Congress cleared a resolution instructing a president to end a military action.

Before a tense Capitol Hill meeting on Wednesday, Trump dismissed the Senate's vote as “poorly timed and meaningless”.

On social media, the president targeted the four Republican senators who voted with Democrats, labeling them “losers”.

The political friction spilled over into a closed-door Senate Republican luncheon on Wednesday, which Trump attended after abruptly calling off a signing ceremony for a bipartisan housing bill. At the luncheon, Trump complained bitterly about Tuesday's vote.

Louisiana Republican Senator Bill Cassidy, one of the four GOP defectors, engaged in a direct shouting match with the president during the private meeting.

“I stood and said, 'You have not told the American people what's going on,’ “Cassidy told journalists afterward. “This was supposed to last four weeks, it's lasted four months. Our original objectives have not been achieved.”

Trump also vented about the war powers setback during an earlier Wednesday meeting with NATO Secretary General Mark Rutte.

“We had four Republican senators and all Democrats... they want to lose the war because they're stupid,” Trump said.

The true financial toll of the conflict remains heavily disputed.

Last month, Pentagon Chief Financial Officer Jules Hurst told a congressional panel the war had cost about $29 billion so far. However, defense analysts and lawmakers argue this estimate does not reflect the full scale of the conflict's financial damage.