George W. Bush: “Johnny Cash was a music legend and American icon whose career spanned decades and genres.”

You've showed the great strength of America through your work—and that is your good heart.

Violence and vitriol must be purged from the public square. Members of other political parties are not our enemies; they are our fellow citizens.

Is it in our national interests that 25 million people who would have died now live? I think it is, and so do you.

History will remember him as among the finest public servants of his generation – a patriot who brought integrity, high intelligence, and seriousness of purpose to every position.