Education
He was graduated from Saint Marys High School in 1895, and then engaged in the local life insurance business.
United States representative politician
He was graduated from Saint Marys High School in 1895, and then engaged in the local life insurance business.
He moved to Cleveland, Ohio, in 1910 and continued the life insurance business. Mooney was elected as a Democrat to the Sixty-sixth Congress (March 4, 1919 – March 3, 1921). He was an unsuccessful candidate for reelection in 1920 to the Sixty-seventh Congress.
He served as delegate to the Democratic National Conventions in 1920, 1924, and 1928.
Mooney was elected to the Sixty-eighth and to the four succeeding Congresses and served from March 4, 1923, until his death in Cleveland, Ohio, on May 29, 1931. He was interred in Gethsemane Cemetery, Saint Marys, Ohio.
He served as member of the Ohio Senate from 1915 to 1919.