Both the plaintiffs and the government filed appeals on the mixed conclusion from the District Court to the Supreme Court. The Court opted to combine the three separate petitions into a single case: • The California Bankers Association, which represented banks operating in California, argued that the Title I record-keeping requirements violated the
Due Process Clause of the Fifth Amendment, as it placed an unreasonable expectation on the banks, and that this also violated the rights of privacy offered by the First Amendment. • The Security National Bank, the ACLU, and the various bank customers asserts, in addition to the California Bankers Association, that the Title II reporting requirements related to foreign transactions violated the First and Fourth Amendments, as well as creating compulsory
self-incrimination against the Fifth Amendment. • The United States Government appealed on the constitutionality of the Title II reporting requirements for domestic transactions, arguing that the Court should have reviewed the Treasury's process for any Fourth Amendment violations, and not the Act itself. Oral hearings were given on January 26, 1974. The Court issued its opinion on April 1, 1974. Justice
William Rehnquist delivered the majority opinion, which was joined by Justices Burger, Stewart, White, Blackmun, and Powell. The decision ruled across ten points from the three petitions but effectively found that neither the recordkeeping requirements of Title I nor the reporting requirements of Title II of the Act violated First, Fourth, or Fifth Amendment rights or
due process rights under the Fifth and Fourteenth Amendments. The decision affirming the constitutionality of the law also expressed concern that some of the parties, such as the bank customers, the California Bankers Association, and the ACLU, did not show any direct harm from the Act and so lacked
Article III standing to challenge the law. Justice Powell wrote a concurring opinion, joined by Justice Blackmun, which affirmed that having a reasonably-high amount, , requiring recording and reporting did not violate privacy rights, but he expressed concern that more government intrusion into bank records could impact privacy rights. Justice Douglas wrote a dissenting opinion. He was joined in part by Justice Brennan on points related on his opinion that the California Bankers Association had standing in the case and that there were significant privacy rights that could be violated by having banks record every transaction of their customers, which the government could have the capability to pull. Justice Douglas continued in his dissent concerns that through the Act, Congress gave the Secretary of the Treasury powers at their discretion that could violate the Fourth Amendment. Justice Brennan also wrote a dissenting opinion, further expressing on Justice Douglas' opinion about the Act giving Secretary of the Treasure excessive powers that would invade privacy rights. Justice Marshall wrote another dissenting opinion that stated
Katz v. United States allowed the records to be kept by banks under the Act to be seen as an intangible extension of a person's private property and so the Act violated the Fourth Amendment. == References ==