Amendment 1
Congress shall make no law respecting an establishment of religion, or prohibiting the free exercise thereof; or abridging the freedom of speech, or of the press; or the right of the people peaceably to assemble, and to petition the Government for a redress of grievances.
How complicated is that? How did this simple sentence confuse four members of the US Supreme Court? (Not that such an amendment should be needed, since the power to make laws regarding these things is not granted our federal government anyway. We believe, as Coyote might also, that laws regulating the political speech of non-profits are just as unconstitutional as other speech-control laws.)
Addendum: Many, or most, governments in the world hate free speech.