In the case of Clark v. Bever, a dispute arose over land ownership in Kansas. The plaintiff, Clark, claimed that he had purchased the land from an individual who had obtained it through a patent issued by the United States government. However, Bever argued that he was entitled to the property because he had occupied and improved it before any patent was granted or claim made by Clark's predecessor. The Supreme Court ruled in favor of Bever stating that under preemption laws at that time (which allowed settlers on public lands to purchase them after making improvements), his rights were superior as long as they were exercised within reasonable limits set forth by law and not abandoned thereafter. This ruling emphasized how federal policy during this period aimed at encouraging settlement and development of Western territories could override formal legal claims based on subsequent patents.

In the dissenting opinion for Clark v. Bever, it was argued that the majority's decision to uphold a tax on commercial brokers violated principles of equal protection under the law. The dissent contended that there was no rational basis for distinguishing between commercial brokers and other types of business professionals in terms of their obligation to pay taxes. It further asserted that this arbitrary distinction constituted an unfair burden on one class of citizens, thereby violating their constitutional rights. The dissent also took issue with the majority's interpretation of what constitutes 'privilege,' arguing that engaging in commerce should not be considered a privilege subject to taxation but rather a fundamental right protected by law.