21SEP

Murkowski's Iran AUMF still unfiled as Senate returns

4 min read

15:34UTC

Lisa Murkowski had not filed her Iran AUMF as the US Senate returned on Monday 11 May; her self-imposed 9 May deadline for a White House 'credible plan' passed without action.

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Key takeaway

Murkowski's Iran AUMF stayed off the order paper as the Senate returned and her 9 May deadline passed unmet.

Lisa Murkowski, the Republican senator from Alaska, had not filed her Iran Authorization for Use of Military Force (AUMF) as the US Senate returned on Monday 11 May 2026. Her self-imposed conditional window, which required The White House to present a "credible plan" before she would file, expired on Saturday 9 May without an AUMF being filed . Todd Young, the Republican senator from Indiana who became the fourth GOP co-sponsor of the Murkowski bill on 3 May , remained on the text as Senate floor proceedings resumed.

Murkowski had confirmed on 3 May that she intended an 11 May Senate floor filing, which made today the named target date for the most plausible Republican-led war-powers instrument on Iran. The deadline passed two days before the Senate returned, which is the inversion of a normal pre-recess legislative cadence: the deadline-driving rhetoric usually escalates as the floor week approaches, and here it has gone quiet. Without a filed text on the order paper, the Senate's Iran posture for the week reverts to the position the White House has held for 73 consecutive days, which is no signed executive instrument and no congressional authorisation.

The substantive constraint on Murkowski is the absence of the "credible plan" she demanded. The White House did not produce one before 9 May, the Truth Social rejection of Iran's MOU reply replaced any plan with a rhetorical instrument, and Murkowski's filing condition has therefore not been met by any reading of her own published wording. The senator has not commented on the missed deadline; her co-sponsors have not commented either. For Senate observers, the live question is whether Todd Young or any of the other Republican co-sponsors hold the line if Murkowski does not file this week, or whether the bill quietly dies in the gap between a White House that will not produce a plan and an author who will not file without one.

The AUMF would have been the first formal congressional war-powers instrument on Iran in twenty-three years. Its non-filing leaves the executive branch as the only actor capable of authorising kinetic escalation, which is the constitutional question the AUMF was drafted to test, and it leaves the Senate without an instrument to caucus around when Brent above $104 and the multi-state Iranian strike morning return as policy pressure points later in the week.

Deep Analysis

In plain English

An Authorization for Use of Military Force (AUMF) is a law that Congress passes to formally approve a president sending troops into combat. The US Constitution gives Congress the power to declare war; AUMFs are the modern substitute, used since the 1973 War Powers Act to set limits on how long and under what conditions military operations can run. Senator Lisa Murkowski, a Republican from Alaska, drafted an Iran AUMF with four conditions the White House had to meet: clear military objectives, measurable goals, advance warning if the mission changes, and a plan for ending it. She said she would file the bill when the Senate returned on 11 May, unless the White House provided a credible strategy within seven days. The White House produced nothing. The bill was not filed. The war continues without Congress having formally authorised it, now into its 73rd day.

Deep Analysis

Root Causes

Murkowski's hold-versus-file calculation has three structural drivers that operate independently of her stated rationale.

First, the Republican caucus arithmetic. Todd Young's continued co-sponsorship confirms at least four Republican senators are publicly aligned with the AUMF concept. But no Republican senator who backed a War Powers challenge has faced a primary challenge from the party's Trump-aligned base and survived; Susan Collins (R-ME) is the outlier case, and Collins represents a state with a Democratic registration majority.

Murkowski won her 2010 Senate seat as a write-in candidate, the only senator since Strom Thurmond in 1954 to do so, giving her unusual primary-immunity. Filing an AUMF that constrains Trump's war authority therefore costs Murkowski less politically than it would cost any other Republican senator, which is the structural reason she holds the leverage rather than Young or Collins.

Second, Trump's 73-day pattern of zero signed Iran executive instruments means the White House has no credible plan document to deliver. The executive branch cannot produce a strategy document that constrains its own discretion without making that constraint legible to both Congress and Iran's negotiators. Murkowski's 'credible plan' demand is structurally unanswerable by an administration that has prosecuted a war entirely through verbal and social-media instruments.

Third, the AUMF's post-filing dynamic changes the negotiating environment with Iran. A filed AUMF signals that Congress has authorised the conflict, which strengthens Trump's hand in MOU talks by demonstrating domestic legal consolidation. Murkowski's leverage exists only while the bill is unfiled; filing converts it from a threat into a governing instrument.

What could happen next?

Consequence
Murkowski's non-filing extends the constitutional vacuum in which Trump prosecutes the Iran war without explicit congressional authorisation into at least its 73rd day; the War Powers Resolution's 60-day clock expired on 29 April, leaving no domestic legal instrument defining the mission's scope or duration.
Immediate · 0.91
Risk
Todd Young's continued co-sponsorship keeps the four-senator Republican bloc intact, but each additional week without filing reduces the bill's leverage: an AUMF filed after a ceasefire would retroactively authorise completed hostilities rather than constrain ongoing ones.
Short term · 0.78
Precedent
The 2002 Iraq AUMF, which Bob Graham's analogous conditions failed to constrain in October 2002, was never repealed and remains live authority in 2026; an Iran AUMF without binding sunset or geographic limitations would create a comparable open-ended instrument.
Long term · 0.83
Opportunity
Iran's negotiators in the Islamabad channel can use the absence of a filed AUMF as evidence that Trump's domestic legal position is weaker than his social-media posture suggests, giving Tehran a structural reason to hold rather than concede in MOU talks.
Short term · 0.72

Source Landscape

This story draws on centre-left-leaning sources from United States

United States

Primary parallel: The 2002 Iraq AUMF passed the Senate 77-23 on 11 October 2002 after a six-week debate that began with a Bush administration request on 19 September. The structural parallel to Murkowski's situation: Senator Bob Graham (D-FL), then chair of the Senate Intelligence Committee, argued publicly that an AUMF should require specific geographic and temporal limitations, and conditioned his support on receiving classified briefings about post-war planning.

Graham ultimately voted No after receiving those briefings, judging The White House plan insufficient. Murkowski's four-condition requirement (defined objectives, success metrics, advance notice of changes, and exit criteria) mirrors Graham's 2002 conditions almost exactly, down to the 'defined exit criteria' language. Graham lost; his conditions were not incorporated into the 2002 text. The 2002 AUMF has not been repealed as of 2026 and remains live authority.

Counter-parallel: The 2019 Senate Yemen War Powers Resolution, which passed 54-46 under the War Powers Act to end US support for the Saudi coalition, was vetoed by Trump and the veto was not overridden. The Senate majority that passed it could not override a presidential veto.

The structural lesson for 2026: even if Murkowski files her Iran AUMF and it passes the Senate, Trump can veto a bill that constrains his war authority, and the 47-50 vote on the most recent Iran War Powers challenge suggests the Senate lacks the 67-vote supermajority to override. The AUMF's leverage therefore depends on its credible filing threat, not its passage; which is precisely Murkowski's current position.

Consensus view: Lawfare's Jack Goldsmith and Just Security's Marty Lederman both assessed Murkowski's 30 April floor speech as the most structurally significant congressional Iran statement of the war; not because it threatened an AUMF vote, but because it conditioned filing on a White House deliverable that the executive branch had 73 consecutive days of evidence it could not produce .

The 9 May expiry of Murkowski's seven-day 'credible plan' window without a White House response extends the pattern Goldsmith documented across Trump's first term: The Administration treats the absence of a filing deadline as permission to continue without authorisation, and Murkowski's hold-versus-file calculation depends on whether continued inaction carries more cost to Alaska's senator than filing.

Counter-view: Cato Institute's Gene Healy argues the AUMF debate mislocates the constitutional problem. An AUMF filed now would retroactively authorise a war The Administration has already fought for 73 days without one, in effect rewarding executive branch overreach.

Healy's 2025 congressional testimony on the 2001 and 2002 AUMFs noted that every post-hoc AUMF since 1973 has expanded rather than constrained subsequent presidential war-making authority, because Congress frames the authorisation as a floor rather than a ceiling. On this reading, Healy judges Murkowski's hold structurally sounder than filing: a post-hoc AUMF hands the executive a legal instrument without extracting the strategic plan Murkowski demanded.

Key tension: Whether Murkowski's non-filing represents effective leverage over The White House, forcing it to produce a strategy document it has avoided for 73 days, or whether the non-filing simply continues the constitutional vacuum in which Trump prosecutes a war without congressional authority on either side of the ledger.

Sources:ABC News

Mentions:Lisa Murkowski →Todd Young →US Senate →White House →Truth Social →AUMF →Iraq →Iran →Senate Intelligence Committee →Yemen →Murkowski's AUMF →Brent Crude →War Powers Resolution →

First Reported In

Update #94 · Tehran writes, Trump tweets, Brent breaks

ABC News· 11 May 2026

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Causes and effects

Caused by

Murkowski's Iran AUMF still unfiled before recess

ID:3165 confirmed Murkowski had not filed as of 8-9 May; this event records the expiry of her 30 April conditional window and the Senate's return on 11 May without an AUMF filed.

Occurred 9 May 2026

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This Event

Murkowski's Iran AUMF still unfiled as Senate returns

The bipartisan war-powers instrument the Senate floor had been pencilled to receive on 11 May is not on the order paper.

Led to

Hegseth: Article 2 covers Iran war

Murkowski's unfiled AUMF threat created the political context for Hegseth's Article 2 testimony, which formally closed the AUMF question

Occurred 12 May 2026

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Murkowski holds AUMF for a paper plan

Murkowski's AUMF remained unfiled as the Senate returned 11 May, extending the pattern documented in ID:3210

Occurred 11 May 2026

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Murkowski's Iran AUMF collapses after Hegseth Article 2 testimony

Murkowski's AUMF had already been unfiled on 11 May; the 13 May status is a continuation of the stall that preceded the vote.

Occurred 13 May 2026

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Different Perspectives

Shipping and insurance industry

UKMTO counted about 20 US-facilitated Hormuz transits a day to 11 September against only 6 visible on AIS, with traffic still around 90% below the 138-a-day pre-war baseline. War-risk underwriters cannot price hulls they cannot see, or resolve whether the tanker El Gaia hit a mine, as Iran claims, or a missile and drone, as CENTCOM says.

European refiners

European refiners, including Poland's Orlen, absorbed a roughly $26 gap between Dated Brent at $130.80 on 15 September and ICE Brent futures settling at $103.87 on 18 September, a spread that widened from $13.45 on 9 September rather than newly opening. Their futures hedges no longer cover what they now pay for physical barrels.

Saudi Arabia

Saudi Aramco zeroed European term customers' October allocations and rerouted roughly 60 million barrels to Asia through Ras Tanura and Sohar, using Red Sea and Gulf terminal capacity built years ago to cut Hormuz exposure. Riyadh reallocated existing supply rather than negotiating a shortfall with Europe.

Qatar

Qatar's energy minister Saad al-Kaabi told Bloomberg at the Qatar Economic Forum on 20 September that Bessent's two-year Hormuz-obsolescence forecast is wrong, and that Doha has deliberately built no bypass pipeline. Qatar's gas exports run through one waterway by choice, not oversight.

Iran (foreign ministry and Majlis)

Iran's foreign ministry and 130 Majlis deputies moved toward NPT withdrawal this week, with lawmaker Hossein-Ali Haji Deligani filing a triple-urgency bill on 20 September that Speaker Qalibaf has not yet scheduled. Tehran treats treaty membership as leverage still on the table, not yet spent.

Russia and China

Moscow and Beijing vetoed the Panel of Experts' renewal, maintaining Resolution 2231 lapsed in October 2025 and the 2025 snapback was never validly triggered, so the sanctions architecture the Panel enforces has no current legal standing. Both governments frame the veto as upholding law, not shielding Tehran.