The more I read, the more it jumps out exactly HOW different the Canadian and American systems are, and how different the relationships are. I think, in Canada, the civil service is much "farther away" from the political arm than in the USA. It would be a pretty strange idea in Canada to have to have parliament confirm the hiring of any civil servant, even at the highest level.
That's because the Canadian lines of authority for the political arm, and the civil service arm don't intersect. (or at least, that's how I recall it).