The main purpose of this legislative text is to reauthorize the Great Lakes Restoration Initiative (GLRI). This program aims to improve the health of the Great Lakes, which are vital natural resources for the surrounding states and communities. The initiative focuses on addressing pollution, restoring habitats, and enhancing the overall ecosystem of the Great Lakes. Key provisions of the legislation include a commitment to allocate $500 million each year from 2027 to 2031 for the GLRI.