Milestones of Advocacy 1950s ABC National was founded by seven contractors in Baltimore, Maryland, with the goal of advocating for merit shop principles. ABC expanded its network and began providing services to its members, including apprenticeship programs and safety programs. 1960s ABC National solidified its leadership position in the merit shop construction industry and saw its membership grow. ABC continued to advocate for its members’ interests in areas like right-to-work and prevailing wage. 12
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