To touch on your first point, on the enterprise value, you're right, the basis for calculating the monetary threshold where transactions become subject to the Investment Canada Act was changed in the last series of amendments to the Investment Canada Act. Now, that being said, the actual provisions related to the calculation of enterprise value are currently the subject of public consultations, so they're part of the regulations. So although the concept of enterprise value is in statute, the manner in which that enterprise value will be calculated, based on the different circumstances of a case, is now being consulted on and therefore is not in force.
On August 7th, 2009. See this statement in context.