Vision 2030, which forms the basis of Saudi Arabian national planning strategy, focuses on creating institutions of excellence and adopting technology for digitalization in public sectors to promote sustainable development. AI-powered Decision Support Systems (DSS) are increasingly becoming an important tool for promoting smarter governance through transformation of multi-disciplinary government data into intelligent predictions. This study aims at presenting an intelligent governance framework powered by Artificial Intelligence in order to achieve the strategic objectives of Vision 2030. The paper explores the idea of proposing a layered architecture for designing a national governance intelligence system based on AI. The proposed framework will facilitate policy assessment, resource optimization, fraud detection, risk prediction, and monitoring of public sector performance. Special attention will be paid to explainability, auditing, and AI-governance principles during the process of decision-making in order to establish transparency and trust in the process. This will allow building an effective governance intelligence system which will support the development of smart cities as well as cross-ministerial governance. The proposed research will result in an effective AI-powered DSS for facilitating smarter governance in Saudi Arabia.