This bill clarifies that the federal Department of State has exclusive authority to regulate the au pair cultural exchange program, preventing states and local governments from enacting their own rules about the program. The legislation affects American families who use au pairs for childcare, foreign youth participating in the exchange program, and au pair sponsoring organizations. The bill requires the Secretary of State to submit a revised federal regulation within 90 days that establishes a uniform national stipend for au pairs while keeping the program affordable for host families, maintains flexibility for military families and shift workers, and promotes cultural exchange goals. The legislation is framed as protecting an important public diplomacy tool that serves tens of thousands of American families needing affordable childcare while advancing U.S. foreign policy objectives.