comply with the provisions of this Act. Not later than 60 days after the date on which the request is submitted, the request shall be deemed to be approved by the Attorney General, unless the Attorney General determines that the granting of such request is inconsistent with the public interest. A Center of Excellence in Cannabis Research registered under this section may purchase or acquire commercially available marihuana for the purpose of research described in section 409L(a)(1) of the Public Health Service Act in accordance with the law of the State in which the transaction occurs. No Federal funds may be used by the Center of Excellence in Cannabis Research for such purchase or acquisition. .