 As city comptroller, Joseph participated in the groundbreaking of the United Nations headquarters in New York City.During the 1950 mayoral election, Joseph declared that Acting Mayor Vincent Impellitteri – who was running for the mayoral post – "had neither the experience nor ability to be Mayor of New York City...," and lacked "sufficient experience" with only two months in the post, and called Impellitteri's Estimate Board record "blank.