There is freedom of speech, but a citizen should have respect for the President, he works consulting his cabinet members as well, he might make mistakes, but just then treat him and say ones grievances in better manner, you can just slap you President, just like your father if the situation calls for it, the President, of what I know will think for his country and its people, anything you say can be discriminating, can reflect your standing, character, right mind, other factors