sentences:  An "ardent Republican", Jack Warner nevertheless supported President Franklin D. Roosevelt and the New Deal in the early 1930s.Later in the decade, he made common cause with opponents of Nazi Germany, overlooking ideological differences with those who held leftist political views.In 1947, however, Warner served as a "friendly witness" for the House Un-American Activities Committee (HUAC), thereby lending support to allegations of a "Red" infiltration of Hollywood.