 It was too conservative for the AFL, which in 1906 sponsored the National Federation of Post Office Clerks (NFPOC), which soon surpassed the UNAPOC.NFPOC grew from 16,000 members in 1922 36,000 in 1932, and nearly 50,000 by 1940.It did not engage in strikes, but spent much of its efforts in opposing hostile Congressional legislation.