United States v. Alexander & Others was a United States Supreme Court case that dealt with the issue of whether the United States government had the right to seize property that was used to facilitate a crime. The case involved a group of individuals who had been convicted of counterfeiting and were accused of using a certain property to facilitate their crime. The Supreme Court held that the government had the right to seize the property in question, as it was used to facilitate the crime. The Court reasoned that the property was an instrumentality of the crime and thus could be seized by the government. The Court also held that the government had the right to seize the property even if it was not owned by the individuals who committed the crime. This decision established the principle that the government has the right to seize property that is used to facilitate a crime, regardless of who owns it.

In United States v. Alexander & Others, the Supreme Court was tasked with determining whether or not a federal court had jurisdiction to hear a case involving an alleged violation of the Neutrality Act by individuals who were citizens of another country. The majority opinion held that because the defendants were foreign nationals and did not reside in any state within the United States, they could only be tried in their own country's courts. Justice Field dissented from this decision, arguing that Congress had given federal district courts authority to try cases involving violations of neutrality laws regardless of where those accused resided. He argued that since these laws applied universally throughout all states and territories under U.S control, it would make sense for them to be enforced uniformly as well - thus allowing for prosecution in U.S courts even if those charged lived outside its borders.