Then we can assume that DonDiego doesn't know that a Governor does NOT have the power to alter a document before signing (ratifying) it. He can refuse to sign it, but he can't change it and THEN sign it--any more than you or I could alter a contract, sign it, and expect it to be binding.
DonDiego also doesn't know that Trump, or any President for that matter, is not President "of all American citizens." He is the chief executive of the American government. There's a difference. He cannot tell me, or you, what to do. He cannot enact laws--his job is to enforce existing laws. If he is President of anything, it is of the government.
DonDiego's ignorance is further revealed by his mischaracterization of the bill he so deplores. The bill refers to malicious use of the word--and hate speech and other forms of speech meant to harm and insult are not protected by the First Amendment. So the Trumper meme, "Hillary is a corrupt bitch" would not be allowed (though the restriction might not apply to public figures), but "Trump bitches about Nancy Pelosi" would be fine.
I am actually not in favor of the restriction of such speech, however, because I think that allowing any kind of vile spew from Trumper mouths helps us to identify and avoid them. Also, Sean Hannity, Limbaugh, Tucker Carlson, etc. are perfectly free to make bushel baskets of money by lying and calling people names. It's their right.
However, I do believe that hate speech, as in rhetoric deliberately meant to incite bigotry and hatred dorected against a person or group, should be restricted--not completely censored, but controlled. DonDiego is using (by implication) the tired old argument that restrictions on absolute freedom of speech lead directly a la slippry slope to totalitarianism. Like all slippery slope arguments, that is flawed and fallacious.