The purpose of this legislation, known as the "Investing in All of America Act of 2025," is to encourage investment in small businesses located in rural or low-income areas, as well as in small businesses involved in critical technology sectors. By amending the Small Business Investment Act of 1958, the bill aims to provide more financial support to these businesses, which often face challenges in accessing capital. Key provisions of the bill include changes to the limits on leverage that small business investment companies can use.