The U.S. Supreme Court case Northern Pacific Railway Co. v. United States in 1946 dealt with the issue of land grants given to railroads by Congress during the late 19th century, specifically those involving checkerboard patterns where every other square mile was granted to a railroad company while the remaining squares were retained by the government for sale or homesteading. The court ruled that these land grants constituted a monopoly and violated antitrust laws because they gave railway companies control over transportation and commerce in large regions of western states, thereby restricting competition from other potential transport providers such as trucking companies or airlines. This decision led to significant changes in how public lands are managed and distributed, emphasizing fair competition over preferential treatment for specific industries.

In the dissenting opinion for Northern Pacific Railway Co. v. United States, it was argued that the majority's decision to void certain land grant contracts between the railway company and settlers on its lands could potentially undermine a significant number of similar agreements across the country. The dissenting justices believed that these contracts were not inherently monopolistic or anti-competitive in nature but rather represented legitimate business arrangements made under unique historical circumstances. They contended that such decisions should be left to Congress, which has more comprehensive tools at its disposal to address any potential abuses arising from these types of agreements. Furthermore, they expressed concern over how this ruling might retroactively penalize parties who had entered into their contracts in good faith based on existing legal precedents and norms at those times.