A Senate war powers resolution aiming to block further U.S. military action against Iran appears to be building and solidifying support among Democrats ahead of an anticipated vote later this week.

Sens. Adam Schiff (D-CA), Andy Kim (D-NJ) and Tim Kaine (D-VA) announced on Tuesday they planned to introduce an amendment to Kaine’s resolution to specifically ensure that the U.S. can continue to share intelligence with Israel and to assist Israel’s defense and provide it with defensive equipment to counter attacks by Iran and its proxies.

A House resolution on the issue had prompted private divisions among Democrats earlier this week over a similar issue, with many lawmakers concerned that the resolution would prevent the U.S. from continuing to support Israeli missile defense, a Democratic staffer not authorized to speak publicly told JI.

The senators said in a statement they expect the full Senate will vote on the amendment prior to a final vote on Kaine’s resolution. They argued that the amendment makes clear to Iran that the U.S. will continue to defend Israel.

Kaine said that the ceasefire between the U.S. and Iran announced Monday night doesn’t change the necessity of the vote, and “actually gives you the space to actually have a decision about, prospectively, should we be at war with Iran without a vote of Congress.”

Asked by Jewish Insider whether he still anticipates that most or all other Democrats will still support the resolution, Kaine said, “They believe we should not be at war without a vote of Congress. They may have different points where a war would be the right thing to do, but that should not happen without a vote of Congress.”

He said he still expects to have multiple Republicans supporting the resolution, but the number is unknown. Only Sen. Rand Paul (R-KY) has publicly voiced support.

Sen. Mark Kelly (D-AZ), asked about the resolution, said that there was not a “clear and imminent threat to the United States, to our citizens” and the administration “should have come to us and talked about this,” as it did prior to Operation Desert Storm, in which he served.

“You’ve got a goal, you talk to Congress about it. You get the force ready to do this. You talk to the adversary and you say, ‘Here are our options: Get out of Kuwait or we’re going to kick you out,’” Kelly said. “That occurred with a full, transparent discussion with the United States Congress, per the Constitution.”

Kelly reviewed a classified Defense Intelligence Agency assessment indicating the U.S. strikes had a limited effect on Iran’s nuclear program, and said that the situation shows the “recklessness of just rushing forward when you don’t have the follow-on plan, and you don’t really consider the consequence.”

He said the strikes were risky because Iran may now take its program completely covert and race to a nuclear weapon. “This has been my concern since the second this happened. Does this push them forward?” Kelly said.

Sen. John Hickenlooper (D-CO) said he hadn’t looked at the resolution but said “it seems like we had lots of time to be consulted.” 

Sen. Elissa Slotkin (D-MI) said she’s still examining the resolution but emphasized that she led legislation in 2020 to block military action against Iran following the killing of Quds Force head Gen. Qassem Soleimani.

Sen. Ted Cruz (R-TX) on Tuesday proposed another amendment to Kaine’s resolution, commending President Donald Trump for a “successful mission” in damaging the regime’s nuclear program. 

Sen. Ted Cruz (R-TX) on Tuesday proposed an amendment to Sen. Tim Kaine’s (D-VA) war powers resolution, which would block the U.S. from taking further military action against Iran, commending President Donald Trump for a “successful mission” in damaging the regime’s nuclear program. 

Cruz introduced the amendment in anticipation of a vote later this week on the resolution, which would curtail the president’s ability to take any additional action targeting Iran without congressional approval. The amendment, if adopted, would attach language to the resolution celebrating the very actions it seeks to block.

“Members of the United States Armed Forces and intelligence community, and all those involved in the planning and successful execution of Operation Midnight Hammer on June 21, 2025, including President Donald J. Trump, should be commended for their efforts in a successful mission,” the amendment reads.

The Texas senator offered an identical amendment praising the president’s actions when Kaine introduced a war powers act in 2020 in response to Trump’s decision to assassinate Quds Force head Gen. Qassem Soleimani. That amendment, which said that those involved in the operation “should be commended for their efforts in a successful mission,” passed 64-34. 

“The Senate routinely passes this language to applaud presidents for operations like these, which make all Americans immeasurably safer. We came together to congratulate President Obama for liquidating Osama bin Laden, and the Senate voted to applaud President Trump for doing the same to Soleimani. I intend to ensure we do the same for this weekend’s crucial operation, which eliminated the existential threat to America of a nuclear-armed Iran,” Cruz told Jewish Insider in a statement. 

Kaine told reporters on Monday that his resolution was likely to come up for a vote on Thursday or Friday.