Long Island Sound Restoration and Stewardship Reauthorization Act of 2023

This bill extends existing federal grant programs focused on the Long Island Sound through 2028. It updates the funding periods for two key programs: the "Long Island Sound Grants" (under the Clean Water Act) and the "Long Island Sound Stewardship Grants" (under the 2006 Stewardship Act), changing their authorization from 2019-2023 to 2024-2028. The bill does not create new programs or change funding levels - it simply continues current grant mechanisms for five more years. These grants support state and local projects aimed at improving water quality and ecosystem health in the Long Island Sound region.