The Alamo Land & Cattle Co., Inc. v. Arizona case in 1975 revolved around a dispute over land ownership rights between the state of Arizona and the Alamo Land & Cattle Company (ALCC). The ALCC had purchased land from private owners who, in turn, had acquired it from the federal government under an 1866 law that allowed for such transfers. However, this law was repealed by Congress before these transactions were completed but after they were initiated. The Supreme Court ruled against ALCC stating that even though their purchase contracts predated the repeal of said law, since title to lands hadn't been transferred prior to its repeal, those sales weren't valid as per new laws enacted by Congress which reserved all unclaimed lands for public use only. This decision upheld Arizona's claim on disputed parcels of land and established precedence regarding interpretation of Congressional intent when repealing laws related to public lands.

The dissenting opinion in the case of Alamo Land & Cattle Co., Inc. v. Arizona argued that the majority's decision to uphold a state law requiring corporations to disclose their shareholders was an overreach of federal power and violated corporate privacy rights. The dissenters believed that such disclosure requirements should be left up to individual states, not mandated by federal law, as they felt it intruded on states' rights and could potentially harm businesses by forcing them to reveal sensitive information about their operations. They also expressed concern that this ruling would set a dangerous precedent for future cases involving corporate regulation and privacy issues, arguing it could lead to further encroachments on business freedoms under the guise of public interest.