The absence of any presidential notification to Congress under the War Powers Resolution regarding U.S. forces entering hostilities in Yemen by the September 30 deadline underpins the 99.4% trader consensus on "No." A 2025 ceasefire with the Houthis, reached after earlier U.S. strikes, has remained in place without formal escalation or reauthorization of combat operations through the resolution window. Recent Houthi attacks on Saudi targets have prompted public consideration of defensive support or joint action, yet these developments occurred after the cutoff and have not triggered the statutory reporting process. Historical patterns of executive restraint on Yemen-specific authorizations, combined with congressional efforts to limit involvement, further align with the current pricing. Late-breaking diplomatic shifts or reinterpretation of existing authorities could theoretically alter resolution, though the passed date limits realistic pathways.