**The 91% trader consensus against the US-Saudi nuclear deal entering into force in 2026 stems primarily from the agreement’s congressional review timeline and unresolved political conditions.** Signed in July 2026 as a Section 123 agreement and transmitted to Congress on August 24, the pact faces a mandatory 90-day review period under the Atomic Energy Act, with potential for joint resolutions of disapproval. President Trump has publicly tied its approval to Saudi Arabia joining the Abraham Accords and normalizing relations with Israel—a step Riyadh has not taken and that faces significant regional obstacles. Additional barriers include congressional concerns over nonproliferation standards, such as the absence of the IAEA Additional Protocol and provisions allowing a future joint study on uranium enrichment. These factors create substantial procedural and diplomatic hurdles within the narrow 2026 window, even as the administration pursues broader US-Saudi energy and security cooperation.