What you describe isn't exactly the law in the U.S., but it gets at some real things: (1) there is a separate "right of petition" in the first amendment in par

What you describe isn't exactly the law in the U.S., but it gets at some real things: (1) there is a separate "right of petition" in the first amendment in parallel with the rights of freedom of speech and press; the right of petition relates to asking the government to change its behavior; (2) the courts have a notion of "core political speech", which is some of the most strongly protected speech; and (3) the courts have a different notion of "commercial speech", which is some of the least-protected speech.