In the 1893 U.S. Supreme Court case of Magin v. Karle, the dispute centered around a land title in California that was originally granted by Mexico prior to its cession to the United States following the Mexican-American War. The plaintiff, Magin, claimed ownership based on an alleged grant from Pio Pico (the last Mexican governor of California) while defendant Karle held possession under a patent issued by the United States government after it had acquired control over California territory. The court ruled in favor of Karle and upheld his claim as valid due to lack of evidence supporting Magin's assertion that he possessed any legitimate right or title originating from Governor Pico's supposed grant before American acquisition. Furthermore, even if such a grant existed and was not presented for confirmation within two years after treaty ratification as required by law at that time, it would have been considered void anyway according to previous legal precedents set forth in similar cases involving land grants made during Spanish/Mexican rule over what is now part of modern-day USA.

The dissenting opinion in the case of Magin v. Karle argued that the majority's decision to uphold a lower court ruling, which found in favor of Karle, was incorrect. The dissenting justices believed that there were significant errors made during the trial process and these mistakes had an impact on its outcome. They contended that certain evidence presented by Magin should have been admitted but was erroneously excluded by the presiding judge. This exclusion, they claimed, prevented a full and fair examination of all relevant facts surrounding the dispute between both parties. Furthermore, they disagreed with how some laws were interpreted and applied in this case; arguing instead for different legal interpretations which would have favored Magin’s position more strongly than what transpired at trial level.