It has also reviewed the actions of the President. Freedom of speech is protected in the United States, and no lawmaking body may interfere with that freedom. But there may be limits, even to free speech. No freedom, even one specifically mentioned in the Constitution, is absolute. People convicted of serious crimes lose their right to vote.
Some religions encourage a man to have several wives.
That is the sort of difficult question that the Supreme Court justices must often answer. Here's an example. The justices sat around the conference table in their locked room, trying to decide what to do about a man from Chicago named Terminiello. The year was 1949. It seems that Mr. Terminiello had given a speech to an audience in a hall in Chicago, attacking all sorts of people.