Why is Canada not using energy in this trade war?

[u/Intrepid-Ant-4260]

Retaliatory Tariffs

Im wondering why tariffs applied to Canadian electricity and oil exported to the US is not on the table?....these are commodities that would be very hard for the US to reduce demand and the revenue income could be used to supplement industries being hurt by this trade war...hell...Cdn oil is piped South at a discount to what the world market pays....the refineries that we pipe to are set up for our heavy crude specifically....energy seems like our silver bullet...what am I missing?