It's particularly confusing since the "earlier generations" were the people who wrote the unreasonable search and seizure clause in the Bill of Rights, almost 150 years before the Soviet Union even existed. The Supreme Court ruled in Katz v US that warrantless wiretaps were unconstitutional so Congress passed laws creating wiretap warrants [1] for law enforcement. Congress didn't ban wiretaps without a warrant, they passed a law to create such warrants in response to a Supreme Court decision that banned what police had been doing for decades, Soviet style.

[1] https://it.ojp.gov/PrivacyLiberty/authorities/statutes/1284