I notice you don't offer any answer to the hypothetical I presented to you. I'm just looking for your method for avoid "subsidy".
There are many methods by which one country can actively attack and diminish another. You are suggesting that a government tasked with defending its citizens should ignore most of those.
My response included tariffs as a possible better solution.
I did not avoid the question. But on the topic of the oil, we need to start with taking away the extra taxes, overbearing regulations and open up all areas for exploration and production.