The Supreme Court has always reversed earlier rulings and changed its opinion with the times. In 1928 (Olmstead v. United States), the Supreme Court ruled that wiretaps did NOT violate the 4th and 5th Amendment. (The argument was that you didn't own the telephone lines, so there was no expectation of privacy). This was more or less confirmed in Goldman v. United States (1942).
It wasn't until 1967 (Katz v. United States) that Wiretaps were declared "search" that required a warrant.
None of these changes were due to Congressional Action. They were all due to Supreme Court cases. And this is why Lawyers are paid a lot of bucks... because its their job to keep up with not only Congressional law, but with Supreme Court rulings (interpretations of law), which can change on the whims of the Supreme Court Justices.