House Democrats emerging from a closed-door meeting Wednesday morning renewed their calls for a vote this week on a resolution that would curtail President Trump Donald John TrumpBarr criticizes DOJ in speech declaring all agency power 'is invested in the attorney general' Military leaders asked about using heat ray on protesters outside White House: report Powell warns failure to reach COVID-19 deal could 'scar and damage' economy MORE’s war powers pertaining to the conflict with Iran.

The gathering was the first all-caucus meeting since Tehran launched a ballistic missile attack Tuesday night against U.S. troops and coalition forces at bases in Iraq in retaliation to the U.S. killing of Iranian Gen. Qassem Soleimani.

No Americans were killed in the attack by Iran, according to initial reports.

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House Foreign Affairs Committee Chairman Eliot Engel Eliot Lance EngelThe Hill's Morning Report - Sponsored by The Air Line Pilots Association - Pence lauds Harris as 'experienced debater'; Trump, Biden diverge over debate prep Coons beats back progressive Senate primary challenger in Delaware Overnight Defense: Trump hosts Israel, UAE, Bahrain for historic signing l Air Force reveals it secretly built and flew new fighter jet l Coronavirus creates delay in Pentagon research for alternative to 'forever chemicals' MORE (D-N.Y.) said a resolution is still needed, even if it isn’t put on the floor in the coming days.

“If it’s not this week, it’ll be soon,” Engel told reporters as he left Wednesday's meeting in the Capitol’s basement. “I do think the [Tuesday night] strike did create some uncertainty, but Congress needs to do what Congress needs to do.”

Speaker Nancy Pelosi Nancy PelosiPowell warns failure to reach COVID-19 deal could 'scar and damage' economy Overnight Defense: House to vote on military justice bill spurred by Vanessa Guillén death | Biden courts veterans after Trump's military controversies Intelligence chief says Congress will get some in-person election security briefings MORE (D-Calif.) and her leadership team appear to be rallying behind a resolution authored by freshman Rep. Elissa Slotkin Elissa SlotkinOvernight Defense: House chair announces contempt proceeding against Pompeo | Top general says military has no role in election disputes | Appeal court rejects due process rights for Gitmo detainees Top general: Military will play no role in resolving any electoral dispute Pelosi weighing bringing House back from August recess early over USPS issues: reports MORE (D-Mich.), a former CIA analyst and Shia militia expert who served three tours in Iraq. That war powers resolution would mandate military hostilities with Iran end within 30 days unless Congress grants approval.

Democrats acknowledge that the timing of the war powers vote is “in flux,” citing Tuesday’s missile strikes, and questions surrounding what message Trump will send in Wednesday’s address to the nation and what information the administration will provide Congress in briefings scheduled for Wednesday afternoon.

But they’re vowing that a vote on the president's war powers will occur at some point. Rep. Katherine Clark Katherine Marlea ClarkRep. Robin Kelly enters race for Democratic caucus vice chair Clark rolls out endorsements in assistant Speaker race Races heat up for House leadership posts MORE (D-Mass.), a member of House leadership, said that despite Trump’s tweet Tuesday night, “all is not well."

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Just days ago, Democrats “certainly had hoped" to move the resolution this week, Clark said. That timeframe is no longer guaranteed, she said, but Democrats still intend to pass the measure as soon as possible

“Yes, I would like to see a decent resolution on the floor,” Rep. Alan Lowenthal Alan Stuart LowenthalAct now to protect our nation's birds Overnight Energy: EPA declines to regulate chemical tied to developmental damage | Democrats unveil .5T infrastructure plan | Land management bureau eases requirements for oil, gas royalty cut requests Land management bureau lessens requirements for oil and gas royalty cut requests MORE (D-Calif.) said as he left the meeting. “Listening to Rep. Slotkin, it would be something that could get bipartisan support and would require the president to come back to Congress before any kind of attack or use of military force against Iran.”

Progressives are also pushing Democratic leaders to hold floor votes on two other bills, in addition to Slotkin's proposal.

Members of the Congressional Progressive Caucus are calling for votes on a measure from Rep. Barbara Lee Barbara Jean LeeSteph, Ayesha Curry to be recognized by the Congressional Hunger Center Democrats unveil plan declaring racism a public health issue With Biden, advocates sense momentum for lifting abortion funding ban MORE (D-Calif.) to end the 2002 authorization of military force for the Iraq war and another from Rep. Ro Khanna Rohit (Ro) KhannaCongress needs to prioritize government digital service delivery DeJoy defends Postal Service changes at combative House hearing Biden unites Democrats — for now MORE (D-Calif.) to block funding for offensive military force in or against Iran without prior authorization from Congress.

Both bills were included as provisions in the House version of the annual defense authorization last summer, but were left out of the final bicameral compromise that Trump signed into law last month.

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Liberals said that Iran's attacks on the U.S. bases in Iraq only added more urgency to proceed with their original plans.

"I think that's part of the problem. Congress has given up for decades too much of our power. And I think this is finally a moment maybe to wake everyone up and try to reclaim some of that power," said Rep. Mark Pocan Mark William PocanClark rolls out endorsements in assistant Speaker race Hillicon Valley: Pentagon reaffirms decision to award JEDI contract to Microsoft | Schiff asks officials for briefing on election security threats Democrats explore new ways to resurrect election security briefings MORE (D-Wis.), co-chair of the Congressional Progressive Caucus.

"We're working very cooperatively with leadership" on taking action on the Lee and Khanna bills, Pocan said.

Rep. Adriano Espaillat Adriano de Jesus Espaillat CabralSharpton, police reform take center stage at National Mall Hispanic Caucus asks for Department of Labor meeting on COVID in meatpacking plants The Hill's Campaign Report: Biden's latest plan on racial inequality MORE (D-N.Y.), another progressive, said that the House should move quickly with the war powers resolution. "I don't think we should go back home without taking it up," he said.

Democrats were briefed at the Wednesday gathering by two former Obama administration veterans with expertise on Iran: Wendy Sherman, a former top State Department official, and Avril Haines, Obama’s former principal deputy national security adviser.

Leaders also walked rank-and-file Democrats through what type of questions they want to ask Defense Secretary Mark Esper Mark EsperOvernight Defense: Trump hosts Israel, UAE, Bahrain for historic signing l Air Force reveals it secretly built and flew new fighter jet l Coronavirus creates delay in Pentagon research for alternative to 'forever chemicals' Oldest living US World War II veteran turns 111 Overnight Defense: US marks 19th anniversary of 9/11 attacks | Trump awards Medal of Honor to Army Ranger for hostage rescue mission | Bahrain, Israel normalizing diplomatic ties MORE, Secretary of State Mike Pompeo Michael (Mike) Richard PompeoThe Hill's Morning Report - Sponsored by The Air Line Pilots Association - Pence lauds Harris as 'experienced debater'; Trump, Biden diverge over debate prep Trump's foreign policy successes confound his detractors It's time for a Jackson-Vanik Amendment for China MORE and other top Trump administration officials at this afternoon’s classified briefing on Iran.

“First, what was the intelligence on the imminent threat from Iran? Second, the attack on Soleimani was on Iraqi soil — did we warn the Iraqis or did we use Iraq as a platform without their knowledge?” said one Democratic lawmaker summarizing his party's questions. “The third is where is this going? What is the strategy?

“It’s coming across as one tactical decision after another without any broader strategy,” the lawmaker added.

--This report was updated at 11:21 a.m.