In Burns v. United States (1926), the Supreme Court ruled on a case involving the interpretation of federal law regarding conspiracy to defraud. The defendants, Mr. and Mrs. Burns, were convicted for conspiring to defraud insurance companies by faking Mr. Burn's death and collecting life insurance benefits under false pretenses; they appealed their conviction arguing that no actual fraud had occurred because no money was ever paid out by any insurer due to suspicion about his supposed death. The Supreme Court upheld their convictions, ruling that an attempt or agreement to commit fraud is itself a crime even if it does not result in financial loss for anyone else involved - in this case, the insurers who did not pay out any claims based on suspicions about Mr.Burns' alleged demise. This decision clarified that under U.S law at least as far as conspiracy charges are concerned, intent and action towards committing fraudulent acts can be enough grounds for prosecution regardless of whether these actions resulted in successful deception or monetary losses.

In the dissenting opinion for Burns v. United States, Justice Oliver Wendell Holmes Jr., joined by Justices Louis Brandeis and Harlan Fiske Stone, argued that the majority's decision to uphold a conviction based on evidence obtained through wiretapping was a violation of the Fourth Amendment rights against unreasonable searches and seizures. The dissenters believed that private telephone conversations should be considered as part of an individual's personal effects protected under this amendment. They contended that allowing such evidence would open up dangerous possibilities for government intrusion into personal privacy without proper checks or balances in place. Furthermore, they disagreed with the majority’s view that wiretapping did not constitute a physical invasion of property but rather only captured sounds transmitted over public airwaves; instead, they maintained it was indeed an invasive act akin to trespassing.