The signed US-Saudi Section 123 civil nuclear cooperation agreement from July 2026 requires transmission to Congress for a mandatory 90-day review period under the Atomic Energy Act before it can enter into force. President Trump has since conditioned final approval on Saudi accession to the Abraham Accords, a step Riyadh has not taken, while lawmakers raise nonproliferation concerns over potential uranium enrichment and safeguards standards. As of mid-August, the full text and required assessments have not been submitted, leaving insufficient time in the calendar year for completion amid possible congressional pushback and procedural delays. Trader consensus at 75.5% against 2026 entry into force reflects these legislative and diplomatic hurdles.