It was too conservative for the AFL, which in 1906 sponsored the National Federation of Post Office Clerks (NFPOC), which soon surpassed the UNAPOC.

[1] On August 20, 2007, the previously independent National Postal Professional Nurses (NPPN) merged with the APWU.

As a result of this merger, the members of the NPPN were granted membership in the Support Services Division of the APWU.

Sen. Joe Lieberman (ID-CT), chairman of the Senate Committee on Homeland Security and Government Affairs, and Sen. Tom Carper (D-DE), chairman of the subcommittee on Federal Financial Management, Government information, Federal Services and International Security, supported the amendment, and voted with committee Republicans for its adoption.

This Association was organized as a fraternal benefit society for railway clerks by five men in Portsmouth, New Hampshire in 1898.

In addition to insurance benefits, the APW-ABA sponsors blood banks, Boy Scout troops, conducts drives for community and medical research funds, and visits sick and disabled members.

The candidate also pledges "to be considerate to the widow and the orphan; the weak and the defenseless; to defend freedom of thought and expression; and to promote the spirit of fraternity."