places where original or other records or documents required under this subchapter are kept or required to be kept, and

places, including factories, warehouses, and other establishments, and conveyances, where persons registered under section 823 of this title (or exempt from registration under section 822(d) of this title or by regulation of the Attorney General) or regulated persons may lawfully hold, manufacture, distribute, dispense, administer, or otherwise dispose of controlled substances or listed chemicals or where records relating to those activities are maintained.

For the purpose of inspecting, copying, and verifying the correctness of records, reports, or other documents required to be kept or made under this subchapter and otherwise facilitating the carrying out of his functions under this subchapter, the Attorney General is authorized, in accordance with this section, to enter controlled premises and to conduct administrative inspections thereof, and of the things specified in this section, relevant to those functions.