I don't think there's anything to restrict the minister's consulting with anyone. If it's the Government of Quebec or the Government of Ontario or the Government of Prince Edward Island, there's nothing to restrict the minister from consulting with them. But the minister will be obliged to show that he or she has consulted with international agencies and Canadian civil society organizations in order to be able to show that she's met the test of the act.
I don't see any restriction whatsoever, but the other part is mandatory.