# Current state
A binding US–Saudi Section 123 agreement (plus companion safeguards agreement) was formally signed on 2026-07-22 by Energy Secretary Chris Wright and Saudi Energy Minister Prince Abdulaziz bin Salman, but as of early August 2026 it had **not yet been transmitted to Congress**, so the mandatory 90-continuous-session-day disapproval-review clock has not started. Entry into force requires that clock to run without a joint resolution of disapproval, plus completion of any NDAA §1264 waiver and diplomatic-note exchange — none of which is confirmed complete.
# Timeline of key events
- 2025-11: Joint Declaration on Completion of Negotiations on Civil Nuclear Cooperation signed during MBS White House visit — a non-binding completion-of-negotiations statement, not the 123 agreement itself (confirmed, energy.gov).
- 2026-03-11: CRS issues updated explainer on 123-agreement congressional review procedure (confirmed, congress.gov).
- 2026-03-26: Sen. Markey introduces S.4243, "No Nuclear Weapons for Saudi Arabia Act of 2026," requiring affirmative congressional approval (confirmed, congress.gov).
- 2026-07-18: CNN reports deal "in limbo" awaiting Trump sign-off; drafts reportedly omit "gold standard" enrichment/reprocessing bans (reported, CNN).
- 2026-07-21/22: Reports surface that the deal lacks IAEA safeguards/Additional Protocol commitments (reported, ZeroHedge/Spokesman/CNN).
- 2026-07-22: 123 Agreement + bilateral safeguards agreement formally signed by Wright and Prince Abdulaziz bin Salman (confirmed, energy.gov, NPR, Time).
- 2026-07-22/23: Trump posts on Truth Social adding conditions (no enrichment, non-military use, contingent on Saudi joining Abraham Accords) — unclear legal effect on signed text (reported, Stimson/AA).
- 2026-08-06: SFRC Ranking Member Shaheen states the White House has "not yet submitted" the agreement to Congress nor briefed on provisions; flags missing Additional Protocol (confirmed, Senate Foreign Relations Committee).
- 2026-08-07: Arms Control Association publishes FAQ on legal/procedural status (reported context, armscontrol.org).
- Ongoing (as of research date): Bipartisan/bicameral criticism (Markey, Sherman, Bennet, Kaine, Meeks) demanding stronger nonproliferation terms; some threaten joint resolution of disapproval; GOP committee leaders reportedly more receptive, reducing veto-proof-disapproval odds (reported, Semafor).
# Event
Will the bilateral US–Saudi Section 123 nuclear cooperation agreement enter into legal force between market creation and 2026-12-31?
# Outcomes to forecast
- Yes
- No
# Kalshi market anchor
No direct kalshi_direct price was returned in this research pull (tool output absent). Nearest available cross-market signal is **Polymarket at 25.5% YES**, down from a high of 28.5%, 7-day trend -3pp, 30-day trend -1pp, thin volume (~$15.7k total, 24 data points) — a soft, drifting-down consensus. Treat Polymarket as the working anchor in absence of confirmed Kalshi price.
# Sub-question answers
1. **Signed or just MOU?** — A full binding 123 agreement plus safeguards agreement was signed 2026-07-22 (energy.gov, NPR), superseding the Nov 2025 MOU/completion-of-negotiations declaration.
2. **Statutory timeline/latest submission date** — CRS: 90 continuous-session days (30+60) from submission, or automatic effect absent disapproval. Code-execution simulation of the 2026 legislative calendar estimates submission needed by ~mid-June 2026 to clear 90 continuous-session days with buffer before Dec 31; actual signing (July 22) already implies transmission would be later than that threshold, raising real risk of slipping past year-end (code_execution; CRS).
3. **Core sticking points resolved?** — No. NPR/CNN: agreement omits "gold standard" enrichment/reprocessing bans and does not require IAEA Additional Protocol adoption; Trump's Truth Social conditions (no enrichment, Abraham Accords linkage) are unclear/unresolved against signed text.
4. **Congressional block risk** — Real opposition (Markey's S.4243, Sherman, Bennet, Kaine, Meeks) exists and Bennet explicitly demands a disapproval resolution, but GOP committee leaders are more receptive; no 123 agreement has ever been disapproved historically, and a veto-proof two-thirds majority is unlikely (Semafor, code_execution).
5. **Recent official statements** — Wright: deal reflects "shared commitment" and "highest standards" of safety/nonproliferation (NPR). Shaheen (Aug 6): agreement not yet transmitted to Congress, no detailed briefing given, missing Additional Protocol (SFRC).
6. **Historical base rate/precedent** — No historical 123 agreement has been blocked by joint disapproval; UAE (2009) "gold standard" deal entered force in ~1 year from signature. This deal's tighter timeline (signed July, not yet transmitted) plus midterm-year congressional calendar compression is a distinguishing risk (code_execution, CRS).
# Key facts (high-confidence, factual)
1. [energy.gov] 123 agreement + safeguards pact signed 2026-07-22.
2. [SFRC/Shaheen, 2026-08-06] Not yet transmitted to Congress as of early August.
3. [CNN/NPR] Draft lacks Additional Protocol and gold-standard enrichment ban.
4. [Congress.gov] S.4243 introduced 2026-03-26 requiring affirmative approval.
5. [CRS] 90 continuous-session-day review clock from submission; automatic effect absent disapproval.
# Cross-market signals
- Kalshi related: Israel-Saudi normalization market (KXABRAHAMSA) at 43%, up 12pp/30d — suggests rising normalization odds but not directly informative on nuclear EIF timing.
- Polymarket (same event): 25.5% YES, declining trend.
- No sportsbook signal available.
# Analyst opinions and speculation
- Time/NPR framing: deal "on track" absent disapproval (optimistic).
- Arms Control Association, Stimson, Markey/Sherman/Bennet: skeptical on safeguards adequacy and urge blocking.
- Code-execution simulation: legislative-calendar math is the dominant constraint, more binding than disapproval risk.
# Directional lean per outcome
- **Yes**: Agreement already signed (a major hurdle cleared); historical precedent of no disapproval; GOP leadership relatively receptive.
- **No**: Not yet transmitted to Congress as of Aug 2026; NDAA §1264 waiver hurdle unresolved; midterm-year congressional calendar compresses available continuous-session days; unresolved gold-standard/Additional Protocol disputes could delay submission further; Polymarket already pricing ~25%, trending down.
# Gaps / unknowns
- No confirmed transmission date to Congress as of latest research.
- Kalshi's own direct price for this ticker was not retrieved this round.
- Unclear whether NDAA §1264 waiver has been/will be issued.
- Unclear if Trump's added conditions (Abraham Accords linkage) are legally binding on the signed text.
# Calibration anchors
- Polymarket YES: 25.5% (proxy anchor, declining).
- Code-execution base-case estimate: ~20-25% probability of 2026 EIF.
- Historical base rate: 123 agreements essentially always eventually enter into force absent disapproval, but calendar/administrative delay (not political rejection) is the main risk here.