I do understand what you say. All agencies responsible for civil rights and liberties told us the same thing. I believe it's a reasonable position. However, what would “necessary” mean? In 2000, for example, there were 37 illegal motorcycle gangs in Canada. Infiltration and use of informers is inevitable in police investigations. You can have the greatest respect for human rights, but you still have to acknowledge that major police investigations cannot succeed without covert operations and the use of informers. Even the Supreme Court recognized that law enforcement agencies don't have to reveal their sources.
How will you define the term “necessary”? Up until now, we don't know of any abuse. Quite the contrary, the RCMP has put in place internal control mechanisms. In the federal government, three departments used these provisions in cases relating to drugs, immigration and organized crime. I find it interesting that you wish to add the term “necessary” but can you give us some details on how it would be interpreted?