A common source of controversy surrounding American monuments and symbols is their religious content, since the First Amendment to the U.S. Constitution limits the sorts of laws Congress can pass that interfere with or try to promote a religion. A group sued to have a cross built by 9/11 responders removed from the 9/11 memorial in New York City because they said it illegally promoted a religious view. But judges ruled that the cross served a mostly historical purpose and could remain on the memorial site.
