In the case of National Labor Relations Board v. International Van Lines, 1972, the U.S Supreme Court ruled in favor of the National Labor Relations Board (NLRB). The dispute arose when International Van Lines refused to bargain with a union that had been certified by NLRB as representing its employees. The company argued that it was not engaged in interstate commerce and therefore fell outside NLRB's jurisdiction. However, evidence showed that while most of its business was intrastate moving services within Illinois, some involved interstate transportation or storage related to out-of-state moves. The court held these activities were sufficient for NLRB jurisdiction because they could potentially affect commerce between states if labor disputes disrupted them. Therefore, even though such operations constituted only a small part of International Van Line’s total business activity and revenue generation, they still brought it under federal regulation through the Commerce Clause.

In the dissenting opinion for the case of National Labor Relations Board v. International Van Lines, 1972, it was argued that the majority's decision to uphold a ruling by the National Labor Relations Board (NLRB) was incorrect. The NLRB had ruled that International Van Lines violated labor laws by refusing to bargain with a union representing its employees. However, in disagreement with this judgment, it was contended that there were significant issues regarding representation and certification of said union which should have been addressed before any bargaining obligation could be imposed on International Van Lines. It was also suggested that certain actions taken during voting procedures may have influenced or coerced employee votes towards favoring unionization - thus potentially compromising fair representation rights under federal law. Therefore, according to this perspective, upholding such an order from NLRB without addressing these concerns undermines both employer and employee rights as well as compromises principles of democratic choice within workplace environments.