In the 1924 case Yee Hem v. The United States, the Supreme Court upheld a conviction for possession of opium with intent to sell. Yee Hem had challenged his arrest and subsequent conviction on several grounds, including that it was based on an unconstitutional search and seizure, that there was insufficient evidence to support his conviction, and that the law under which he was convicted - the Harrison Narcotics Tax Act - exceeded Congress's power under the Commerce Clause. However, in its decision written by Justice Oliver Wendell Holmes Jr., the court rejected each of these arguments. It held that because Yee Hem had voluntarily shown federal agents where he kept his opium stash after they found some in plain view during a lawful visit to his premises, no illegal search or seizure occurred; moreover, given this voluntary disclosure plus other incriminating evidence presented at trial (including testimony about prior sales), there was ample proof of guilt; finally as regards constitutionality of Harrison Act itself: since drug trafficking clearly affects interstate commerce due to its national scope and impact upon public health/safety/welfare etc., Congress indeed has authority over such matters via said clause.

In the dissenting opinion for Yee Hem v. The United States, Justice McReynolds disagreed with the majority's interpretation of the Narcotic Drugs Import and Export Act. He argued that it was not Congress' intention to criminalize possession of drugs but rather their importation and sale. According to him, interpreting this law as a prohibition on mere possession would be an overreach of federal power into areas traditionally regulated by states - in this case, personal conduct within state borders. Furthermore, he believed that such an expansive reading could lead to potential abuses where individuals might be prosecuted under federal law for minor drug offenses typically handled at a local level. Ultimately, his concern was about maintaining a balance between state and federal authority in matters related to individual behavior regulation.