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Murkowski drafts Iran AUMF; Hawley ties to Day 60

3 min read
09:56UTC

Senator Lisa Murkowski is drafting an Authorization for Use of Military Force for Operation Epic Fury, and Senator Josh Hawley told Bloomberg he will push for a floor vote if the war is not over by Day 60.

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Key takeaway

The first signed Iran instrument of the war may come from Congress rather than the White House.

Senator Lisa Murkowski (R-AK) is actively drafting an authorization for use of military force (AUMF) for Operation Epic Fury, the US military campaign against Iran launched on 28 February 2026, per Bloomberg reporting 1. Senator Josh Hawley (R-MO) told Bloomberg on 18 April he will push for an AUMF floor vote if the war is not over by Day 60, the 29 April War Powers Resolution (WPR) statutory deadline for congressional authorisation of military force.

Murkowski's on-record framing places Congress in the role of drafting the authorisation The White House has not produced. "There is no question the president should have sought authorization from Congress before striking Iran on this scale," she told Bloomberg; her draft would "let the American people know the limits and objectives of this military operation." Senator John Curtis (R-UT) has reviewed the text and declined to share details.

Hawley's commitment is the sequel to the fourth Senate WPR failure of 15 April, which was blocked 47-52 and in which Hawley first called publicly for an AUMF vote . The Senate Democratic WPR resolution tabled in parallel reached 13 co-sponsors heading into an expected 23 April floor vote . An AUMF would sit upstream of a WPR: authorising the war rather than demanding its end.

The path to the first signed Iran instrument of the 2026 war now runs through Congress rather than through the executive branch. That is a reframe of the Republican posture from blocking withdrawal to authorising the campaign under conditions. Even a passed WPR still requires a two-thirds override to survive a Trump veto, and the Senate's 2020 ceiling on a comparable Iran WPR was 55-45. The AUMF option reshapes the arithmetic by giving hawkish Republicans a vehicle they can vote for rather than one they must block.

Deep Analysis

In plain English

In the United States, the Constitution gives Congress the power to declare war. But presidents have often launched military actions without a formal declaration. To manage this, Congress passed the War Powers Resolution in 1973, which says: if the president sends troops into combat without a congressional declaration, he has 60 days to either get congressional approval or bring the troops home. Operation Epic Fury launched on 28 February 2026. Day 60 is 29 April 2026 ; ten days away. Senator Lisa Murkowski is drafting an Authorization for Use of Military Force (AUMF) ; a congressional vote saying 'we approve of this war, under these specific rules.' Senator Josh Hawley says he will push for a floor vote on it if the war is not over by Day 60. This matters because if Congress does not act and the president does not request an extension, the War Powers Resolution technically requires a withdrawal of forces ; though no court has ever enforced this against a sitting president.

Deep Analysis
Root Causes

The 50-day instrument-free streak documented in event-05 is the structural root cause here: by failing to produce a signed presidential instrument defining war aims, limits, or authority, the Trump administration left a legal vacuum that congressional Republicans are now attempting to fill on their own terms.

Murkowski's draft ; which explicitly states the president 'should have sought authorization' ; is not friendly legislation; it is a constitutional corrective from within the president's own party.

Hawley's Day 60 deadline (29 April) reflects the War Powers Resolution's statutory 60-day clock. That clock started on 28 February 2026 when Operation Epic Fury launched; 29 April is the date by which Congress must either authorise the operation or the president must withdraw forces absent an extension request.

What could happen next?
  • Risk

    If Hawley's Day 60 floor vote on an AUMF fails ; as four WPR votes have already failed ; the war continues in legal limbo beyond 29 April with no congressional instrument defining its scope or limits.

    Short term · 0.78
  • Opportunity

    An AUMF with explicit parameters and limits, if passed, would give Trump's Iran campaign more durable legal authority than executive-order-free operations currently enjoy ; incentivising the White House to engage with Murkowski's draft rather than oppose it.

    Short term · 0.58
  • Precedent

    A Republican senator explicitly stating the president 'should have sought authorization' creates a within-party constitutional challenge with no equivalent since the 1973 WPR debates.

    Medium term · 0.72
Sources:Bloomberg
Mentions:Lisa Murkowski →Josh Hawley →Kaine-Paul War Powers Resolution →Israeli strikes (28 February 2026) →War Powers Resolution →Bloomberg →Prima →Iran →United States →White House →Syria →Iraq →AUMF →
First Reported In

Update #73 · Russia yes, Iran no: Treasury signs only one waiver

Bloomberg· 19 Apr 2026
Read original →
Causes and effects
Caused by
Hawley signals AUMF at 60-day mark
Hawley's AUMF commitment (target event) follows directly from the fourth WPR Senate failure (ID:2584) in which Hawley first publicly called for an AUMF vote.
Occurred 15 Apr 2026
Read story →
Senate WPR reaches thirteen as deadlines cluster
The Senate WPR reaching 13 co-sponsors (ID:2395) sharpened the congressional deadline pressure that now pushes Murkowski and Hawley toward an AUMF as an alternative instrument.
Occurred 13 Apr 2026
Read story →
This Event
Murkowski drafts Iran AUMF; Hawley ties to Day 60
The first signed Iran instrument of the 2026 war now looks likely to come from Congress under deadline pressure rather than from the White House, reframing the Republican posture from blocking withdrawal to authorising the campaign.
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