Key word "unreasonable." Is it unreasonable to take whatever steps are necessary to prevent terrorist attacks by monitoring their communications into and out of this country?
The key words are also "but upon probable cause, supported by Oath or affirmation."
It is unreasonable if these accountability measures are not violated and government employees remain faithful to their oath to preserve and defend the Constitution, including defending individual liberties.
That's what I hear so few people say... first that the word "unreasonable" is subjective so there is nothing "clear cut". Secondly, is it not the case the the conditions of wiretap were a) at least one participant in the communication was an al queda name and b) at least one participant was on foreign soil?