President Joe Biden.ANDREW CABALLERO-REYNOLDSPresident Biden has called for a nationwide AI challenge to help protect critical US software.The challenge will kick off in spring 2024 and there will be cash prizes for the top five teams. Anthropic, Google, Microsoft, and OpenAI are lending their expertise to the competition.Hackers have been invited by President Joe Biden to compete in a two-year competition to develop AI-driven systems to strengthen the nation's most important software.The AI Cyber Challenge, as it has been termed by The White House, challenges competitors to identify and fix software vulnerabilities in code that helps run the internet and other critical infrastructure.