Question: What is the name of the international exchange program established by this Democrat whom  Charles T. Bernard famously ran against in the Senate race as Republican nominee in 1968?
Sentence (from "Charles T. Bernard"): Charles Taylor Bernard, Sr. (September 10, 1927 – June 27, 2015) was an American businessman and politician originally from Earle in Crittenden County in eastern Arkansas.
Relevant evidence: No