 Marchisio supported Italian politics before World War II, for instance speaking out in support of the Italians in the Second Italo-Ethiopian War.In 1937, Marchisio was appointed to a ten-year term as Justice of the Court of Domestic Relations by Mayor Fiorello H. La Guardia.Also at that time he was president of "Il Crociato", the Roman Catholic Diocesan Italian newspaper, where he had formerly served as managing editor.