Congress passes Iran war powers resolution by June 30?

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Market context

The real-world event driving this market is the U.S. Congress’s attempt to pass a joint war powers resolution that would halt American military action against Iran, a move that has already seen the House approve its version on 3 June 2026 with a 215–208 vote, defying President Trump despite symbolic rather than immediate legal effect[1][3]. The Senate has similarly advanced a comparable resolution procedurally but has repeatedly failed to secure final passage, with a recent 47–48 vote falling short of the majority needed[2][5].

Historically, such resolutions in the U.S. have rarely forced an end to hostilities without executive compliance or a formal declaration of war, as seen in past conflicts where congressional rebukes remained symbolic unless backed by broader legislative or judicial pressure[4]. The current 100% crowd-implied probability appears to assume the Senate will inevitably pass the House bill in the coming weeks, yet the pattern of weekly failures suggests this certainty may be overstated given the narrow margins and Republican leadership’s resistance[2][5].

Traders should monitor the Senate’s upcoming procedural votes, any new bipartisan coalitions forming, and statements from key Republican senators who have previously broken ranks[2]. A critical catalyst is the 30-day clock set by the new resolution introduced by Democrats, which begins on 28 February 2026 and requires the President to justify continued action to Congress by late March, though operations have already extended beyond this window[6]. Recent reporting from Reuters confirms that increasing apprehension among party members is driving these efforts, but final passage remains uncertain without a clear shift in Senate leadership’s stance[2]. Programmatically, this market would be approached by setting conditional orders tied to Senate vote outcomes, using bots to track real-time vote tallies, and employing copy-trading strategies aligned with traders who have positioned heavily on the Senate’s eventual approval.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). The odds column is filled only where we have clean data — that avoids the made-up numbers that get a network demoted when search engines cross-check against the source venue.

Resolution & payout

Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.

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FAQ

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Polygon credits deposits after 12 confirmations — usually under 30 seconds. Withdrawals follow the same path and land back in your wallet within minutes.

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Not under $1,500 of lifetime trading volume. Above that threshold, Polymarket Review UK triggers a quick verification flow that finishes in minutes.