Is this statement true or false?

If Congress passed a law making it a crime to write letters criticizing the government, it would be a law against the expression of ideas rather than a law against an action

True. If Congress passed a law making it a crime to write letters criticizing the government, it would indeed be a law against the expression of ideas rather than a law against a specific action. It would infringe upon the freedom of speech, which is protected under the First Amendment of the United States Constitution.