I wouldn’t worry too much. They’ll find another way to do the same thing, just give them time. One thing about “GOVERNMENTS”, they either have to get bigger or that government will die. It’s the job of governments to eventually oppress their people. Oh, they’ll hide behind the CONSTITUTION, while they eviscerate the CONSTITUTION.
They don't need any time. All the legal pieces are in place, the government argues that it has the inherent authority to eavesdrop. As long as it doesn't use the information in court, there is no violation of the constitution; and even in court, if the snooping touches on foreign intelligence, it is outside of the "requirement" (cough cough) to get a particularized warrant.
The point of the statute is simply to get Congress's sense on the record, for what that is worth (the judges do what they will anyway, statutes are just a mess of words to talk around, interpret and otherwise address while rendering the judicially desired outcome).
There is also the judicially-created "special needs" doctrine for circumventing the 4th amendment, it too needs no statute for support.
Ultimately, the phrase "reasonable expectation of privacy" is not defined by the public, it is defined by courts. Courts serve the government first, the people second.