After his 1940's and 1950's career as an actor, Ronald Reagan had a long track record as a political commentator and was Governor of California. Although his political views were ridiculed in some quarters, they proved to be correct and led directly to the fall of the Soviet Union, a milestone in modern history.
George Clooney, on the other hand, has a track record of......what?
Clooney's opinion on world affairs has as much value as the opinion of the cast of "Friends". It is only publicized because he is famous and popular for his acting roles and not necessarily because it can stand up to critical examination.
I do not believe that Clooney would do very well in a debate on his views with any of a large number of well informed FReepers.
The difference is that Reagan was an actor who was elected president of his union, then Governor of California, then President of the United States.