Congress passes Iran war powers resolution by June 30?

Platform comparison

Market context

The U.S. House of Representatives has, for the first time, passed a resolution demanding President Trump seek congressional authorization before continuing military operations in Iran, marking a pivotal shift after three prior failed attempts. This 215–208 vote on 3 June 2026 saw more Republicans oppose the conflict, including key figures like Thomas Massie and Warren Davidson, while the Senate is now expected to take its next procedural vote on the similar measure it advanced last month[3][4].

Historically, war powers resolutions have struggled to pass both chambers due to narrow, party-line splits; the House blocked three such measures in March, April, and May 2026, each failing by single votes or exact ties[4]. The current 100% crowd-implied probability appears detached from this pattern, as even the recent Senate vote in late May passed only with four Republican joiners and one Democrat opposing, underscoring the fragility of bipartisan support[5][6].

Traders must monitor the Senate’s upcoming procedural vote, the President’s response to the House resolution, and any new legislative announcements before the 30 June deadline. A recent report notes Democrats have introduced a new War Powers Resolution with a 30-day clock commencing 28 February 2026, requiring the President to end hostilities unless Congress authorises force[2]. The outcome hinges on whether the Senate can secure enough cross-party votes to match the House’s breakthrough, a challenge given past failures[1][3].

Sources: 1 · 2 · 3 · 4 · 5

Methodology

This page reviews Congress passes Iran war powers resolution by June 30? across five venues. We show live odds for Polymarket-based markets (sourced from the Polygon order book); for other venues we list platform attributes, since the comparable contracts are not exposed via a public API on every venue. Every CTA points at Champions League Prediction — the application we operate, where you trade directly against the Polymarket order book at 0% fees.

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