; (F) to offer a clear, conspicuous, and easy-to-understand notice of its policies and practices with respect to personal data and the capabilities described in this paragraph; and (G) when providing on-demand content, to employ measures that safeguard against serving advertising for narcotic drugs (as defined in section 102 of the Controlled Substances Act ( 21 U.S.C. 802 )), tobacco products, gambling, or alcohol directly to the account or profile of an individual that the service knows is a minor. 16. Severability If any provision of this Act, or an amendment made by this Act, is determined to be unenforceable or invalid, the remaining provisions of this Act and the amendments made by this Act shall not be affected.