The present RCMP Act gives the commission the power to compel a witness or to require the production of a document in the course of a public inquiry. But that's not something we do or would wish to do frequently. It's cumbersome and expensive. Bill C-42 will give the commission the power to compel witnesses, to require the production of documents or information as part of a regular investigation as of right.
On October 17th, 2012. See this statement in context.