Creates a new temporary gag rule and a judicial-review process for certain federal administrative subpoenas. Recipients of qualifying subpoenas who receive a required certification and notice of the right to seek judicial review would be barred from disclosing that the government sought or obtained records for 180 days, with limited, specified exceptions for sharing. The measure also adds a new statutory procedure allowing subpoena recipients to ask a court to review nondisclosure orders and requires the Government to move to seal the matter within 30 days of notice; courts may hold closed hearings and consider enumerated factors when issuing or extending secrecy orders.