Every nation has a chief of state, a person who serves as the symbolic leader of the country and represents the nation. In the United States, the president both leads the government and acts as the chief of state, although this is not the case in many countries. As chief of state, the president presides over commemorations of war heroes, throws out the first pitch at baseball games, and attends funerals of world leaders, among other duties.
Well, since one of the goals listed in the Preamble is to, "for a more perfect union," then perhaps it is that freedom of speech would help that goal of unifying the nation.
