A federal agency responsible for enforcing immigration policy recognized the potential of Generative AI to transform its operations. Leaders wanted to integrate AI and Large Language Models (LLMs) into applications that could process large volumes of data, streamline policy drafting, and improve collaboration across other government. At the same time, they worried about risks such as data leakage, misinformation, prompt injection, and unauthorized access. The agency needed a way to capture the benefits of GenAI, while protecting sensitive information, preventing misuse, and ensuring compliance obligations in mission-critical work under strict security standards.