What entity or event connects Richard Nixon, Alger Hiss, Julius Rosenberg, and Ethel Rosenberg?

Question

Quizplus · Accepted Answer

The House Un-American Activities Committee, also known as HUAC, was a congressional committee that investigated alleged subversive activities and Communist ties in the United States during the early to mid-20th century. All four of these individuals were investigated and accused by HUAC of being involved with Communist activities, with Nixon being a key player in pursuing Hiss, and the Rosenbergs being famously convicted and executed for espionage.

What Entity or Event Connects Richard Nixon, Alger Hiss, Julius