In Highland it was claimed that the term "national or international labor organization" as used in the National Labor Relations Act is a technical one, meaning "union", thereby excluding the CIO, which was "a federation".
In Shoreline Enterprises of America, Inc. v. NLRB, 262 F.2d 933 (5 Cir. 1959), the court recognized that a Board agent is present not only to make sure eligible voters vote but also to make sure that an employee who thinks he is eligible may cast a challenged ballot.