The main purpose of the Space Infrastructure Act is to recognize space systems, services, and technology as critical infrastructure in the United States. This designation aims to enhance the security and resilience of these systems, which are essential for various functions, including communication, navigation, and national security. Key provisions of the Act require the Secretary of Homeland Security to take specific actions. Within 30 days of the law being enacted, the Secretary must officially designate space systems, services, and technology as a critical infrastructure sector.