In the case of Magone v. Wiederer, 1895, the United States Supreme Court ruled on a matter concerning customs duties. The defendant had imported sugar from Germany and was charged with paying import duty based on its polariscopic test results which indicated it to be above No. 16 Dutch standard in color. However, the defendant argued that this method of testing was not accurate as it did not consider other factors such as ash content and dry substance which could affect color determination. He contended that his sugar should have been classified under a lower duty rate because it was below No. 16 Dutch standard in color when considering these additional factors. The court held that according to U.S law at the time (Act of October 1st,1888), only one factor -color- determined by polariscope test is considered for classification purposes while importing sugars into US irrespective of any other characteristics like ash content or dry substance etc., Hence they rejected defendant's argument stating there were no provisions within existing legislation allowing for consideration beyond just color measured through polariscope tests during custom duties assessment process.

In the dissenting opinion for Magone v. Wiederer, Justice Harlan argued that the majority's interpretation of customs laws was incorrect and overly narrow. He contended that a broader reading of the law would allow for duties to be collected on imported goods even if they were not explicitly listed in tariff schedules. According to him, this approach would better align with Congress' intent when it passed customs legislation and help protect domestic industries from foreign competition. Furthermore, he criticized the majority's reliance on technicalities rather than considering the spirit and purpose behind these laws. Ultimately, his disagreement stemmed from different interpretations of statutory language and congressional intent regarding import tariffs.