Going back to Canada?

Hi there, I am just wondering if anyone has any advice, info.? on returning to Canada? I came to Switzerland with my first husband and when that marriage ended and I was returning home I met a Swiss man! and we are now married. We are considering moving to Canada. I am a little concerned... as all the sites I have looked at suggest that the Canadain government "treat expats like the enemy"!! that is just one quote! and it is not that easy to return home? Any information is much appreciated.