Robert Jimison and Megan Mineiro
A divided Congress is deeply split over the Trump administration’s large-scale military campaign against Iran on the eve of a Senate vote on the matter, after President Trump and top officials have offered a head-snapping series of shifting justifications for the conflict.
Members of the House and Senate emerged from classified briefings with top administration officials on Tuesday with divergent assessments of the case they had made for war, falling almost entirely along party lines.
Democrats said the president and his team had failed to articulate an imminent threat to justify acting without consulting Congress, while Republicans largely rallied behind the president’s decision — though some warned their support could waver should the conflict expand.
“I am truly worried about mission creep,” Senator Chuck Schumer, Democrat of New York and the minority leader, said as he exited a classified briefing with Secretary of State Marco Rubio and Gen. Dan Caine, the chairman of the Joint Chiefs of Staff. He said the closed-door meeting was “very unsatisfying” and that the administration had “different answers every day” about why the president ordered the strikes on Tehran.
Republicans largely praised the operation, which they said prior presidents had been unwilling to initiate to eliminate the threat posed by Iran. Some warned that a prolonged military campaign could risk eroding that backing.

“I’ve never felt better about how this ends,” said Senator Lindsey Graham, Republican of South Carolina, who emerged from the briefing before it concluded lauding the administration’s actions and rationale.
The partisan rift was on display ahead of a Senate vote expected on Wednesday, and a similar one planned in the House on Thursday, on measures that would curb Mr. Trump’s power to continue using military force in Iran without explicit authorization from Congress. Both were expected to fail given almost unanimous Republican opposition.
But the debate was likely to give voice to a deep well of anxiety and uncertainty on Capitol Hill about Mr. Trump’s decision, without consulting the legislative branch, to start what he and his advisers have characterized as a potentially open-ended conflict in the Middle East.
As he arrived for a second day of closed-door meetings with lawmakers on Tuesday, Mr. Rubio said the United States was preparing to intensify attacks on Iran in the coming days. He warned Americans in the region about the risk of retaliatory strikes, urging them to leave as airports closed and embassy staff members were evacuated.
A day after asserting that the decision to strike Iran was driven primarily by Israel’s plan to attack the country, leaving U.S. interests vulnerable to retaliation, Mr. Rubio walked back that rationale. He said on Tuesday that Mr. Trump had determined that the threat posed by Iran’s growing weapons arsenal constituted an imminent danger to Americans in the region.
But in a legally mandated letter to Congress, Mr. Trump asserted that he ordered the sweeping airstrikes to advance national interests and eliminate Iran as a global threat, contradicting his own officials’ claims of an imminent threat. The letter said the attack aimed to “neutralize Iran’s malign activities.”
Several lawmakers exited the closed-door briefing expressing deep skepticism about the rationale.
“We got no additional information on what the imminent threat was,” Representative Pramila Jayapal, Democrat of Washington, said. “There were a lot of references to the 47 years of Iran being a problem. That is not imminent. That is in the past. Imminent means immediate threat to the U.S.”
Representative Sara Jacobs, Democrat of California, said that administration officials had “pushed back on the idea that Israel was calling the timing. But then they kind of said that Israel was calling the timing. So it was all very incoherent.”

Republican leaders struggled to echo the administration’s conflicting explanations. On Monday, Speaker Mike Johnson told reporters after an initial classified briefing for congressional leaders with Mr. Rubio that the “great concern” was that, in the wake of an Israeli attack, U.S. troops would have been the target of Iranian retaliatory attacks.
“We would have suffered staggering losses,” Mr. Johnson said. “And if we had waited to respond, before acting first, then those losses would have been far greater.”
But on Tuesday, he echoed Mr. Rubio’s new explanation, telling reporters: “This is really a very simple matter. It’s about the building of ballistic missiles. That’s what Iran was engaged in. And they were doing it at a speed and at a scale that was exceeding the ability of our regional allies to respond appropriately. This created an imminent and serious threat.” He made no mention of Israel.
Still, even as they prepared to vote against the measure to rein in Mr. Trump’s war powers, some Republicans suggested their position could shift if the military action expanded or dragged on.
“I will be a no for now, but if this thing goes beyond a few weeks, I’m going to have a lot more concerns,” Representative Nancy Mace, Republican of South Carolina, said after the briefing on Tuesday. She added that her concerns would grow if U.S. troops were deployed on the ground in Iran, but noted, “That’s not where we are today. That’s not what I heard in the briefing.”
Senior officials “assuaged a lot of concerns that members had,” said Representative Dusty Johnson, Republican of South Dakota. But the deployment of U.S. troops to Iran, he said, would “indicate a deeper level of engagement” that many lawmakers would “want greater congressional involvement in.”
Senator Josh Hawley, Republican of Missouri, also said his support could shift if U.S. troops were deployed on the ground. He said that given Mr. Rubio’s briefings and the notifications provided to Congress about the operation, “I’m going to vote no on the war powers resolution, because I think they’re in compliance with statute, and the statute gives them 60 days.”
Both resolutions invoke the 1973 War Powers Resolution, which bars U.S. armed forces from engaging in hostilities for more than 60 days without congressional authorization or a declaration of war.
Some Democrats, including Senator John Fetterman of Pennsylvania, have signaled they would oppose the effort. Mr. Fetterman said last weekend that he was a “hard no” on the resolution.
In the House, Representatives Josh Gottheimer of New Jersey, Jared Moskowitz of Florida and Greg Landsman of Ohio have said they would oppose the effort. They instead plan to offer an alternative resolution that would give the president 30 days to wind down the operation against Iran before having to seek congressional authorization.
More on the Assault on Iran
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School Bombed in Iran: Thousands of mourners filled the streets of a town in southern Iran during the funeral for victims of an airstrike on a girls’ elementary school, according to footage and images verified by The New York Times. The strike ranks among the deadliest attacks of the American-Israeli campaign against Iran.
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Canada’s Support: Mark Carney, the Canadian prime minister, said that Canada’s support for the military action in Iran comes “with regret, because the current conflict is another example of the failure of the international order.”
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Evacuating Travelers: European governments have been rushing to set up escape routes for hundreds of thousands of their citizens who are among stranded travelers in the Middle East, as airstrikes disrupted airport operations and forced airspace closures. The White House press secretary said that the U.S. State Department was “actively working on plans to help Americans in the Middle East return home.”
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Iran’s Ballistic Missiles: Trump said that destroying Iran’s missile capabilities was one of the top U.S. objectives. But finding and destroying Iran’s entire arsenal of ballistic missiles as well as their production sites could be particularly challenging. Meanwhile, Tehran has been using another deadly weapon: drones.
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Death Toll: As of Tuesday night, more than 870 people have been killed in the fighting in the Middle East since the United States and Israel attacked Iran on Saturday. The number of U.S. service members killed in the first few days of the war grew to six, with four identified Tuesday night.
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Iran’s Capital Under Siege: Residents in Tehran talked to The Times about the bombardment, describing block after block littered with mangled metal, shards of glass and shreds of paper.
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Impact on U.S. Embassies: The United States government closed its embassies in Saudi Arabia and Kuwait and ordered nonessential staff in several other countries to evacuate as Iran expanded its retaliatory attacks.
