Like France, but unlike the Ireland or the United Kingdom, the United States combines the job of Head of State and Head of Government into a single person. A citizen can disagree with governmental policy proposals of Barack Obama, just as a citizen could disagree with the the policies of Ronald Reagan. But there is no reasonable doubt that Reagan did an excellent job in his role as Head of State. A patriotic American can appreciate the good work of a President as Head of State, even while disliking much of the President's work as Head of Government. Senator Obama's victory speech in South Carolina suggests that he too might be an outstanding Head of State.
Obama's Victory Speech: Sounds like a President