Point I made is unless you know what is or is not reasonable you don't know if you need a warrant, and there are some REASONABLE searches ~ always have been ~ always will be.
Again, solve the "reasonable/unreasonable" formula before jumping to warrants!
I think reasonable/unreasonable is reasonably clear in this case. It is unreasonable to go on fishing expeditions looking for things unless there is already evidence of a crime. Either the fourth amendment means something or it doesn’t. The governments view is that it - along with all the other amendments in the Bill of Rights - means nothing. The concept of “living constitution” means that the constitution means only what the government wants it to mean, and in that case the constitution which was institutied among other things to protect the citizens from tyranny is gone.