In the United States v. Camou case of 1901, the Supreme Court ruled on a dispute involving import duties. The defendant, Mr. Camou, was an importer who had brought goods from Mexico into California and disputed the amount he was charged in customs duties by U.S officials. He argued that because California was not officially a part of U.S territory at the time his goods crossed over (it became official after they arrived), he should be exempted from paying these charges or pay less than what was demanded. The court disagreed with this argument stating that once Congress passed legislation to impose tariffs on imported goods, it applied to all territories under its jurisdiction including those pending formal incorporation like California during that period. Therefore, Mr.Camou's imports were subject to full tariff rates as stipulated by law regardless of when his merchandise entered American soil relative to when California formally joined the Union. This decision reinforced Congressional authority over trade regulations across all U.S territories and clarified how such laws apply within transitional periods of territorial expansion.

The United States v. Camou case does not appear to have a recorded dissenting opinion available for summarization. The case, which took place in 1901, involved the interpretation of tariff laws and their application to imported goods from Mexico into the U.S., specifically focusing on whether certain duties were correctly imposed or not. However, there is no record of a dissenting opinion by any justice in this particular Supreme Court decision.