Here is an excerpt from the Pope's address at the White House:
"The Church, for her part, wishes to contribute to building a world ever more worthy of the human person, created in the image and likeness of God. She is convinced that faith sheds new light on all things, and that the Gospel reveals the noble vocation and sublime destiny of every man and woman. Faith also gives us the strength to respond to our high calling, and the hope that inspires us to work for an ever more just and fraternal society. Democracy can only flourish, as your founding fathers realized, when political leaders and those whom they represent are guided by truth and bring the wisdom born of firm moral principle to decisions affecting the life and future of the nation."
My comment: Note how the Pope stresses that democracy requires that leaders be guided by truth. This is an important theme for Benedict, who has often spoken against the relativism that afflicts modern societies.