In the case of Alaska Fish Salting & By-Products Company v. Smith in 1920, the U.S Supreme Court ruled on a dispute over fishing rights in Alaskan waters. The plaintiff, Alaska Fish Salting & By-Products Company, claimed exclusive right to fish for salmon and other fish species within certain areas based on leases granted by the United States government. However, defendant Smith also fished in these areas under licenses issued by the Territory of Alaska. The court held that while Congress had given power to regulate fisheries to the Secretary of Commerce and Labor (now split into two separate departments), it did not intend this authority to extend so far as granting exclusive fishing privileges or monopolies. Therefore, even though federal law allowed for leasing water spaces for creating fixed appliances necessary for taking fish such as traps or pounds; it did not grant an absolute monopoly over all fishing activities within those leased areas.

The dissenting opinion in the case of Alaska Fish Salting & By-Products Company v. Smith argued that the majority's decision to uphold a tax on fish caught and canned in Alaska was unconstitutional. The dissenters believed that this tax violated the Uniformity Clause of the Constitution, which requires all duties, imposts, and excises to be uniform throughout the United States. They contended that because Alaska was not yet a state but rather a territory at this time, it should not have been subject to such taxes under federal law. Furthermore, they disagreed with the majority's interpretation of "uniform" as meaning "geographically uniform," arguing instead for an understanding based on equality among taxpayers regardless of location or circumstances. This would mean no special burdens could be placed on certain industries or regions without similar taxation elsewhere - something they felt had occurred here with Alaskan fisheries being singled out unfairly.