This bill establishes new requirements for governmental entities seeking to use a mail cover, amending federal law to mandate a court order for such use. A court of competent jurisdiction may issue this order only if the governmental entity provides specific and articulable facts demonstrating reasonable grounds that the mail cover is relevant and material to an ongoing criminal investigation. The legislation further requires the Chief Postal Inspector to preserve records and other evidence related to a requested mail cover for 90 days, extendable upon renewal, while awaiting a court order. The bill defines "mail cover" by referencing existing federal regulations, ensuring clarity in its application.