The President doesn't create laws on his own, the legislative branch would have create a bill and send it to the President. Technically per section 230: https://www.law.cornell.edu/uscode/text/47/230 > (c)Protection for “Good Samaritan” blocking and screening of offensive material >(1)Treatment of publisher or speaker No provider or user of an interactive computer service shall be treated as the publisher or speaker of any information provided by another information content provider. >(2)Civil liability No provider or user of an interactive computer service shall be held liable on account of— (A)any action voluntarily taken in good faith to restrict access to or availability of material that the provider or user considers to be obscene, lewd, lascivious, filthy, excessively violent, harassing, or otherwise objectionable, **whether or not such material is constitutionally protected**; or (B)any action taken to enable or make available to information content providers or others the technical means to restrict access to material described in paragraph (1).[1] Per section 230, they can censor as much as they want "whether or not such material is constitutionally protected".