Guarding Readiness Resources Act

This bill amends federal law to clarify how the National Guard Bureau handles reimbursement funds received from states, territories, or the District of Columbia. It requires that funds paid back for using military property must be credited to the specific account that covered the original expenses or a similar account for the same purpose. These funds may only be used by the Department of Defense for repairing, maintaining, or similar upkeep of assets directly used by National Guard units operating under state active duty status. The bill affects the National Guard Bureau and state/territorial governments that reimburse the federal government for shared property costs.