Allow me to address that in two parts.
First, it is well known and it is the public experience that courts are sometimes asked to consider whether a search warrant or wiretap--it is a search warrant, much more commonly--has been properly obtained, and for the courts to conclude that it has not been and then to set it aside. That is an indication that even with prior judicial authorization, there are problems, in some instances, with the understanding of the law on the part of police officers who apply for these. Prior judicial authorization is important because it will stop some of these processes in advance. Right now there is no such way of stopping them. It is a public officer who is tasked with determining whether or not it's proper to go forward.
Second, I will respond to the comment about the tools that are necessary for the trade.
It's true that police require certain tools in order for them to do their jobs effectively, but it is absolutely incorrect, I say with respect, to suggest that each and every conceivable tool imaginable would comply with Canadian society--with our law, our standards of decency, and our constitutional standards.
I'll ask this rhetorically. These provisions permit the use of assault as part of an investigative technique. Is it really the case that we want police or their agents to commit assault, because it somehow is thought that it will advance an investigation?
And think about investigation. Some cases are investigative in the sense that they are simply intelligence-gathering, and they never go before the courts. These provisions would permit the commission of an assault as part of intelligence-gathering.
I suggest to you that not every tool should go into the toolbox.