The Smarter Approaches to Nuclear Expenditures Act aims to significantly reduce U.S. spending on nuclear weapons and related defense programs. The legislation seeks to prohibit the development and deployment of low-yield nuclear warheads and implement substantial cuts to the existing nuclear arsenal, reflecting a shift towards nuclear disarmament and cost-saving measures in defense spending. Key provisions of the Act include strict limits on the number of nuclear-armed submarines, intercontinental ballistic missiles, and deployed strategic warheads.