Not by any stretch of the imagination is it prohibited by government. See: First Amendment.
Official “Government” is doing very little of today’s Violations of the 1st Amendment by Prohibiting free speech, free thoughts, free religion in public, in meetings, and in politics.
It is the socialist-democrat-racists in the media, in charge inside the government, and in the courts who are doing it “individually” with the full encouragement of the “free press” and the “private businesses” who are doing it.
Now, yes,they are breaking the Law, breaking the Constitution, breaking your and my rights. But the democrats don’t care. And their allies in the government and what little is left of the press corpse are NOT fighting the trend.