Possibly: "Presidents may use their predecessors as emissaries to deliver private messages to other nations or as official representatives of the United States

Possibly: "Presidents may use their predecessors as emissaries to deliver private messages to other nations or as official representatives of the United States to state funerals and other important foreign events. Richard Nixon made multiple foreign trips to countries including China and Russia and was lauded as an elder statesman. Jimmy Carter has become a global human rights campaigner, international arbiter, and election monitor, as well as a recipient of the Nobel Peace Prize." [1] [1] http://en.wikipedia.org/wiki/President_of_the_United_States#Post-presidency http://en.wikipedia.org/wiki/President_of_the_United_States#...