Reimbursing Border Communities Act of 2023 This bill requires the Department of Homeland Security to make grants to certain border communities for expenses related to security measures along the southern border. Specifically, the local government of a community is eligible for a grant if it is located within 200 miles of the border and is not a sanctuary jurisdiction as defined by the bill. Additionally, no grant may be used to reimburse nonprofit organizations, fund legal representation, or provide educational, housing, food, or health care resources to a non-U.S. national ( alien under federal law).