Which organization did senator joseph mccarthy first accuse of housing members of the communist party?

Answer: The State Department

Explanation: Senator Joseph McCarthy was an American politician who served as a Republican U. S. Senator from the state of Wisconsin from 1947 until his death in 1957. He is known for alleging that numerous communists and Soviet spies and sympathizers had infiltrated the United States federal government as well as other establishments.

After 3years in the Senate, McCarthy became famous in February 1950 when he asserted in a speech that he had a list of members of the Communist party who were employed in the State Department. McCarthy made additional accusations of Communist infiltration into the State Department, the administration of President Harry S. Truman, the Voice of America, and the U. S. Army in succeeding years.