Liberty Prospers: USMCA 2026 Alignment, National Security Clarity, and the Economics of Trust is a near-future geopolitical thriller about what happens when alignment is chosen early enough to matter. In 2026, the mandatory review of the United States-Mexico-Canada Agreement (USMCA) forces a reckoning. The pressures are real. The timelines are unforgiving. And for the first time in a generation, delay is no longer cost-free. In this final volume of the SIGMA Directive Liberty series, Canada and North America choose clarity. By 2035, the consequences of that decision are visible not in triumph, but in stability. Trade rules harden. Definitions become law. Institutions regain coherence not through rhetoric, but through execution. Markets respond first. Supply chains tighten. Capital returns cautiously, then deliberately. Public trust stabilizes - not enthusiastically, but durably. Nothing about the transition is painless. Subsidies are converted. Inefficiencies surface. Political capital burns. But accountability restores agency, and agency restores optionality. Prosperity emerges not as abundance, but as capability - uneven, disciplined, and real. Toronto analyst Joel McCay is no longer a witness to drift. He becomes a participant in a system that no longer rewards deferral. Maya Khan, advising quietly across institutions, helps translate alignment into operational reality. Lucas Harding, working at the frontier of applied AI, sees how technology begins to serve execution rather than narrative. SIGMA, an embodied analytical system once necessary to force uncomfortable truths into rooms, fades into infrastructure - effective, auditable, and no longer needing to persuade. This is not utopia. Disagreement remains. Trade-offs persist. Inequality does not vanish. But emergency politics recede. Trade stops being theater. Governance becomes legible. People plan again. Liberty Prospers is grounded in economic realism, trade policy, and national security logic. It presents one complete reality - not as instruction, but as outcome. It does not imagine alternatives or offer slogans. It shows what happens when alignment works because it must. The future remains open. Because responsibility was chosen while choice still existed.